/ spring wire GOST 9389-75 65G for the manufacture of springs

Spring wire GOST 9389-75 used for the manufacture of cold-wound springs that are not subject to hardening.

Our assortment includes: patented piano steel spring wire GOST 9389-75 1st and 2nd accuracy classes, groups A, B, B, steel grade 65G TU 14-4-386-73.

Wire GOST 9389 spring steel carbon is subdivided:
by mechanical properties: grades B and B, classes 2 and 3, by manufacturing accuracy: normal and increased accuracy.


The surface should be free of cracks, caps, sunsets, hairs and rust.

Technical characteristics of spring wire GOST 9389-75 steel 65G

Buy spring wire. Mechanical properties. Price for spring wire GOST 9389.
Wire diameter, mm Tensile strength, N/mm2 (kgf/mm2) Run-up in the party. kgf/mm2 no more
ClassGrade ABrand BBrand B
1 2 3 1 1,2,3 1 2 3
Wire class
0.50 265-300 220-265 170-220 23 27 - - -
0.60 265-300 220-265 170-220 21 24 - - -
0.63 260-295 220-260 170-220 20 - - 40 -
0.70 260-295 220-260 170-220 19 - 35 - -
0.80 260-295 215-260 170-215 18 23 30 45 45
0.90 255-285 215-255 165-205 17 23 - 40 50
1.0 250-280 210-250 160-210 16 22 - - -
1.2 240-270 200-240 155-200 15 21 30 - 45
1.4 230-260 195-230 150-195 15 20 - 35 45
1.6 220-250 190-220 145-190 15 20 25 30 45
2.2 195-220 170-195 135-170 15 - - 25 35
2.5 185-210 165-190 130-165 15 - - - -
2.8 180-205 165-190 130-165 15 - - - -
3.0 175-200 165-190 130-165 15 - - - -
3.6 170-195 180-155 125-155 15 - - - 30
4.0 165-190 150-175 120-150 15 - - - -
8.0 - 125-145 105-125 - - - - -

Winding is carried out without interchanging the turns and ensures free winding of wire from spools and skeins. When releasing the skein from the ties, the wire should not curl into a figure eight.

A skein consists of one piece of wire. No more than three pieces of wire are allowed on a reel or coil weighing more than 250 kg. Instead of marking the separation points, it is allowed to draw out and secure the ends of the segments on the cheek of the reel.

Sale of spring wire 65G. Mechanical properties of spring wire GOST 9389-75.
Wire diameter, mmNumber of wire twists, not less
Brand A, BBrand B
1 2 3 1 2 3
Class
0.50 - - 20 16 19 19
0.60 - - - - 18 18
0.63 - - - - - -
0.70 - - - - - -
0.80 - - 20 16 17 17
0.90 - - - - - -
1.0 - - - - - -
1.2 - - - - - -
1.4 20 20 20 16 17 17
1.6 - - - - - -
2.2 15 15 15 13 15 15
2.5 - - - 12 - -
2.8 - - - 11 14 14
3.0 - - - 10 13 13
3.6 - - - 7 13 13
4.0 - 13 13 - - -
8.0 - - - - - -

Notes:

1. At the request of the consumer, the supply of wire of intermediate diameters is allowed. At the same time maximum deviations in diameter must correspond to those established for the nearest larger diameter.

2. The ovality of the wire should not exceed half of the diameter tolerance range.

Examples of symbols:

GOST 9389 spring wire, grade A, class 1, increased accuracy, diameter 1.60 mm:

Wire A-1-P-1.6 GOST 9389-75

Spring wire, grade B, class 3, normal accuracy, diameter 2.0 mm:

Wire B-3-2 GOST 9389-75

Spring wire grade B, class 2A, increased precision, diameter 1.20 mm:

Wire B-2A-1.2 GOST 9389-75

Spring wire 65G is intended for the manufacture of springs; it is wound in a cold state and subjected to hardening. Spring wire is made of steel grade: 65G or 65-75 according to GOST 14959-79.

At the request of the furniture industry, spring wire 65G with a diameter of 2.2 mm, increased precision, grade B, is manufactured with a tensile strength of 1570-1770 N/mm2 (160-180 kgf/mm2).

The relative strength run-up is calculated using the formula:

K = Δσ in / σ in

Where:
Δσ in - run-up of temporary tensile strength in the batch, N/mm 2;
σ in - minimum value temporary tensile strength in class, N/mm 2.


Theoretical weight of 1000 m of spring wire:
Nom. wire diameter, mm Weight 1000 m, kg Wire diameter, mm Cross-sectional area, mm.sq. Weight 1000 m, kg
0,14 0,0154 0,1208 2,0 3,14 24,65
0,15 0,0177 0,1387 2,1 3,46 27,19
0,16 0,0201 0,1578 2,2 3,8 29,83
0,18 0,0254 0,1994 2,3 4,15 32,58
0,20 0,0314 0,2465 2,5 4,91 38,54
0,22 0,0380 0,298 2,8 6,16 48,36
0,25 0,0491 0,385 3,0 7,07 55,5
0,28 0,0616 0,484 3,2 8,04 63,11
0,30 0,0707 0,555 3,4 9,08 71,28
0,32 0,0804 0,631 3,5 9,62 75,52
0,36 0,1018 0,8 3,6 10,18 79,9
0,40 0,1257 0,99 4,0 12,57 98,7
0,45 0,159 1,25 4,2 13,85 108,7
0,50 0,196 1,54 4,5 15,90 124,8
0,56 0,246 1,93 5,0 19,63 154,2
0,60 0,283 2,22 5,6 24,63 193,3
0,63 0,312 2,45 6,0 28,3 221,0
0,70 0,385 3,02 6,3 31,7 244,4
0,75 0,442 3,47 6,5 33,2 260,5
0,80 0,503 3,95 6,7 35,3 276,8
0,85 0,567 4,45 7,0 38,5 302,1
0,90 0,636 4,99 7,5 44,2 346,8
1,0 0,785 6,17 8,0 50,3 394,6
1,1 0,950 7,46 - - -
1,2 1,131 8,88 - - -
1,3 1,327 10,42 - - -
1,4 1,539 12,08 - - -
1,6 2,01 15,78 - - -
1,7 2,27 17,82 - - -
1,8 2,54 19,94 - - -
1,9 2,84 22,26 - - -

Release form: skeins of 80-120 kg or coils weighing 500-800 kg up to 1000 kg.

TECHNICAL REQUIREMENTS

Spring wire GOST 9389-75 must comply with the requirements of the standard for technological regulations approved in the prescribed manner, from carbon steel according to GOST 1050-88, GOST 14959-79, GOST 1435-90 or according to regulatory and technical documentation, as well as from steel grades KT-2 and ZK-7, chemical composition which are indicated in the table, and other steels of special smelting, manufactured according to regulatory and technical documentation. In this case, class 2A wire must be made of steel with a mass fraction of sulfur not exceeding 0.030% and phosphorus not exceeding 0.035%.


Spring wire 65g GOST 9389-75 should not have cracks, films, sunsets, hairlines, shells and rust on the surface.

Risks with a depth of no more than half the diameter tolerance field are allowed, as well as remnants of technological coatings applied to the surface of the wire to prepare the metal for drawing.

Wire GOST 9389-75 class 2A for the aviation industry must be without traces of technological copper plating on the surface.

Complete decarburization of the wire is not allowed. The depth of partial decarburization should not exceed 1.2-1.5% of the nominal diameter on grade A wire of class I and grade B wire.

At the consumer's request, spring wire of grades A and B should not break or crack when coiled or bent.

Spring wire GOST 9389-75 with a diameter of up to 3.0 mm must be wound around a cylindrical core equal to the diameter of the wire, and with a diameter of 3.0 mm or more must be either bent by 180° or wound.

In this case, the diameter of the cylindrical core must be equal to two wire diameters for wire from 3.0 to 6.0 mm and three wire diameters for wire over 6.0 mm. A cylindrical core of smaller diameter is acceptable. The number of turns when winding must be at least eight.

At the request of the consumer, wire GOST 9389-75 grades A and B should not delaminate when tested for torsion. Delamination refers to cracks running along a helix along the surface of the sample. The main break should be smooth and perpendicular to the axis of the wire.

Waviness is not allowed. By waviness we mean periodic change diameter or periodic bending of the wire, which persists when a load not exceeding 0.3 of the breaking force of the wire is applied to a sample of wire with a working length of 200+0.5 mm.

Winding of wire should be done without interchanging the turns and ensure free winding of the wire from the spools and skeins. When releasing the skein from the ties, the wire should not curl into a figure eight.

The skein should consist of one piece of wire.

No more than three pieces of wire are allowed on a reel or coil weighing more than 250 kg. In places where the sections separate, bookmarks must be laid. Instead of marking the separation points, it is allowed to draw out and secure the ends of the segments on the cheek of the reel. Tying the ends of wire sections is not allowed.

Each skein must be firmly tied with soft wire according to regulatory and technical documentation in at least three places evenly spaced around the circumference.

Rolls of wire with a diameter of 0.60 mm or less can be tied with the end of a wound wire or twine in accordance with GOST 17308-88 or other regulatory and technical documentation.

Skeins of the same class, group and diameter can be knitted into coils.

The end of the upper piece of wire on the reel should be secured to the cheek of the reel.

The wire must be coated with preservation oils (lubricants) type NG-203A or NG-203B according to OST 38.01436-87 or K-17 according to GOST 10877-76.

It is allowed to use other oils (lubricants) that provide protection against corrosion. Wire on spools may be supplied ungreased.

Reels with wire with a diameter of less than 0.20 mm must be wrapped in a layer of paper and placed in wooden boxes in accordance with GOST 18617-83 or other normative and technical documentation, or in metal containers made according to normative and technical documentation, lined with waterproof paper on the inside.

Hanks, coils of wire with a diameter of 0.20 mm or more must be wrapped in a layer of paper, then in a layer of polymer film or non-woven materials, or fabric made of chemical fibers. When mechanized packaging, coils of wire must be wrapped in a layer of cable crepe paper in accordance with GOST 10396-84 or KMV-170 grade paper, or other crepe paper with equivalent protective properties, or polymer film with the packaging secured with wire in accordance with GOST 3282-74 or other wire.

By agreement between the manufacturer and the consumer, the wire may not be packaged or lubricated.

The weight of one piece of cargo must be no more than 1500 kg.

Used as a semi-finished product for the manufacture of highly loaded and heavily loaded springs with increased requirements for wear resistance. The material for the manufacture of spring wire must combine the necessary strength, heat resistance, relaxation resistance, thereby ensuring the stability of the properties of the springs, have a given degree of corrosion resistance and be non-magnetic.

Spring wire (PP) is metal product increased strength, which is used for the production of hooks, all kinds of pins, springs and other structures that require special spring characteristics.

1 Features of the production and use of PP

This wire is manufactured according to two State Standards - 9389-75 and 14963-78 using the technology of drawing (broaching) the original workpiece through a series of holes, the cross-section of which is reduced. After this, the PP undergoes a heat treatment procedure. It is necessary to improve spring properties finished products.

Heat treatment also increases the tensile strength of finished wire products. It is allowed not to subject the wire to heat treatment. But in this case, finished structures that will be made from it must undergo a heat treatment operation.

The last hole for drawing on drawing mills is often equipped with a special sizing die. This is done when, according to the conditions of the technical process, it is necessary to obtain a calibrated product with a smooth and as even surface as possible.

Wire different types according to GOST 9389–75 and 14963–78, it is most often used for the manufacture of studs, pins, hooks, axles and springs at enterprises in the mechanical engineering industry.

When producing these PP products on special machines, steel tempering (preliminary) and subsequent hardening are usually performed. These operations improve the strength properties of finished structures.

Winding of springs is carried out using two methods - hot and cold. Better products are obtained by using a hot circuit, which involves heating the wire raw material before winding to the temperature of the metal tempering. Then (after direct winding and subsequent cutting of the parts to the required geometric dimensions), the resulting product is hardened.

Currently, spring wire is used by designers creating original interior projects for residential premises, shopping and office complexes. It bends easily, allowing you to form “decorations” of almost any shape, and has high decorative qualities. The special properties of the described material were also appreciated by furniture manufacturers. They use spring wire as a strong finishing material for sofas and tables, cabinets and chairs.

2 Types and technical characteristics of PP according to GOST 9389–75

According to this State Standard, spring wire can be of high or normal accuracy. According to mechanical indicators, it is divided into four classes (3, 2A, 2 and 1) and three grades (A, B, C). Products of class 2A are always produced with increased precision.

Main characteristics of PP:

  • diameter – 0.14–8 mm (allowed deviations – from ±0.01 to ±0.05);
  • ovality – no more than half the value of the indicated deviations;
  • tensile strength – from 1030–1230 (class 3 spring wire with a cross-section of 8 mm) to 2740–3090 (class 1 products with a cross-section of 0.14 mm) N/mm2;
  • the number of twists that PP can withstand is from 4 to 35 (the specific indicator depends on the raw materials from which the wire is made, as well as on the class and type of the finished product);
  • weight (established by theoretical calculations) of 1000 meters of wire products – 0.1208–394.6 kg.

GOST 9389–75 requires that carbon spring wire, which is used for winding springs using the cold method without hardening, be made from grades specified in standards 14959, 1050 and 1435. Upon customer request, PP can be produced from other steel alloys in which the phosphorus and sulfur content does not exceed 0.035 and 0.030%, respectively.

State Standard 9389–75 does not allow waviness, rust, hairs, caps, shells, sunsets, cracks on the surface finished products, rust, decarburization phenomenon of (complete) PP. Partial decarburization is possible, but its depth should not exceed 1.5–3% of the cross-section of the wire product.

The wire is supplied on spools and also in skeins. They wind it in such a way that when unwinding the material does not fold into “figure eights”. On coils and skeins weighing less than 250 kg, PP is wound in one piece, more than 250 kg - in a maximum of three pieces. Moreover, GOST 9389–75 indicates the need to lay special plugs in places where the segments are separated. One wire piece cannot be less than 0.3 kg for products with a diameter of up to 0.25 mm and less than 30 kg for products with a diameter of more than 3 mm kilograms.

3 Information about carbon wire testing and packaging

According to Gosstandart 9389–75, finished products undergo the following types of quality checks:

  • according to the requirements of GOST 1763 - to the depth of decarbonization;
  • according to standard 1545 - for twisting (a sample is taken with a length of 100 wire diameters);
  • according to GOST 10447 – for winding;
  • according to standard 10446 - tensile strength and resistance indicator for a certain period of time.

The products are inspected with the naked eye for the presence of surface defects and fractures. If necessary, State Standard 9389–75 allows the use of magnifying devices with a magnification value of 5 times.

The waviness is determined with a micrometer on sections of PP 195–205 mm long. In this case, 10 measurements are taken. The samples must be fixed in a special unit (for example, in a tensile testing machine), which makes it possible to apply the required load on the material being tested.

If 3 or more measurements show deviation of the product from the section specified according to standard 9389–75, the material is classified as wavy. It should not go to consumers. Note that such results are observed extremely rarely; the PP manufacturing technology itself eliminates the high probability of waviness formation.

Tests are carried out on samples that must be taken according to State Standard 9389–75 from each reel or from each of the two ends of the skein. In some cases, it is permitted to use non-destructive and statistical analysis techniques during testing.

Spring wire with a cross-section of up to 0.6 mm is tied with twine, other sections - with soft wire material. The surface of the skeins is coated with lubricant (preservative) K-17, NG-203 (type A or B) to ensure PP.

To package finished products, two-layer, oiled or waxed paper, chemical fiber fabrics, glued or canvas-stitched packaging fabric, and polymer film are used. Wire products should be stored in accordance with the requirements of Standard 15150 (Section 3).

4 Key provisions of Gosstandart 14963–78

GOST 14963–78 regulates the subtleties of the production of alloyed round wire for the manufacture of springs, which, after winding, are quenched and tempered. Such wire products can be produced standard view(without surface finishing) and with remote surface layer(with finishing). According to its intended purpose, alloy wire according to standard 14963–78 can be intended for cold or hot winding. It is divided into two classes. PP of the first type is used for the production of critical products, the second - for general purpose springs.

Alloyed wire products have a diameter in the range of 0.5–14 mm. It is made from alloy steels 70S3A, 60S2A, 51HFA, 65S2VA.

PP is subject to the following types additional processing surfaces:

  • grinding;
  • polishing;
  • drawing without grinding and polishing;
  • drawn after roughing, turning or grinding.

The surface roughness of finished products after polishing should be no higher than 0.32–0.63 microns, depending on the type of wire, and after polishing – no higher than 0.63–2.5 microns. For drawn products, the roughness value is not given in GOST 14963–78.

Decarburization for PP with finishing is not allowed; for products without finishing, partial decarburization is allowed with a depth of no more than 0.03 mm (wire with a cross-section of 4.8 mm) and no more than 0.025 mm (cross-section up to 4.8 mm).

GOST 14963–78 excludes delamination or cracking of alloyed wire products with a cross-section of less than 0.6 mm for cold coiling after it has been wound around a rod for five turns. The tensile strength of such wire cannot be more than 105 kgf/mm2.

The finished PP is checked in accordance with GOST 14963–78 using the methods that are used for wire in accordance with Gosstandart 9389 (we described them above). Heat treatment of alloyed wire samples is carried out according to the following scheme:

  • hardening (temperature about 850 °C);
  • cooling (oil should be used as a cooling compound);
  • vacation (about half an hour) at a temperature of approximately 400 ° C;
  • another cooling in hot water or in a heated oil composition.

Alloyed PP with surface treatment in accordance with GOST 14963–78 is produced in rods. For one meter of their length, curvature of up to 0.5 mm is allowed. At the customer's request, wire without processing is also produced in rods. In other cases, it is produced in skeins weighing from 0.25 to 7.5 kg.

Rods according to the requirements of State Standard 14963–78 are assembled in bundles. If the length of the rods is more than five meters, they can be wound into skeins. When assembling skeins with products of the same section and type, they are allowed to be assembled into coils, which are treated with a special lubricant that protects the products from corrosion.

The wire is used to make springs that are cold wound and not subject to hardening.

The wire is produced:

by mechanical properties:

  • grades A, B and C
  • classes 1, 2 and 3

by manufacturing accuracy:

  • normal
  • increased

The surface of the wire should be free of cracks, caps, dulls, hairlines and rust.

The maximum deviation in thickness and ovality should not exceed that indicated in the table.

The value of the run-up in temporary tensile strength in coils (coils) weighing up to 250 kg of grades B of classes 1, 2 should be no more than 100 N/m 2 (10 kgf/mm 2); grade B class 3 and grade B of all classes for wire with a diameter of 1.6 mm and less -200 N/mm 2 (20 kgf/mm 2), and for wire with a diameter of more than 1.6 mm -150 N/mm 2 (15 kgf/mm 2).

The value of the run-up in the tensile strength of wire in coils (coils) weighing more than 250 kg must comply with the requirements of GOST. The values ​​are shown in the table.

Wire diameter, mm

Tensile strength, N/mm 2 (kgf/mm 2)

Temporary tensile strength run, no more, N/mm 2 (kgf/mm 2)

Number of twists, not less

2nd grade

3rd grade

Brand B

Brand B

Brand B

Brand B

Class

Class

2300-2740 (235-280)

1810-2300 (185-235)

2160-2600 (220-265)

1670-2160 (170-220)

2160-2550 (220-260)

1670-2160 (170-220)

2110-2550 (215-260)

1670-2110 (170-215)

2110-2500 (215-255)

1620-2110 (165-215)

2060-2450 (210-250)

1570-2060 (160-210)

2010-2400 (205-245)

1520-2010 (155-205)

1960-2350 (200-240)

1520-1960 (155-200)

1960-2300 (200-235)

1520-1960 (155-200)

1420-1670 (145-170)

1130-1420 (115-145)

1370-1620 (140-165)

1130-1370 (115-140)

1370-1620 (140-165)

1130-1370 (115-140)

1320-1570 (135-160)

1080-1320 (110-135)

1320-1570 (135-160)

1080-1320 (110-135)

1230-1420 (125-145)

1030-1230 (105-125)

1230-1420 (125-145)

1030-1230 (105-125)

INTERSTATE STANDARD

CARBON STEEL WIRE
SPRING

TECHNICAL CONDITIONS

IPC PUBLISHING HOUSE OF STANDARDS

INTERSTATE STANDARD

Date of introduction 01/01/77

This standard applies to cold-drawn carbon steel wire used for the manufacture of cold-wound springs that are not quenched.

(Changed edition, Rev. No. 3).

1. TYPES AND MAIN DIMENSIONS

1.1. The wire is produced:

a) according to mechanical properties:

brands A, B, C,

b) in terms of manufacturing accuracy:

normal accuracy,

increased accuracy - P.

Wire of classes 1, 2, 3 is produced with normal and increased accuracy, class 2A - with increased accuracy.

1.2. The diameter of the wire and the maximum deviations along it must correspond to those indicated in the table. 1.

Table 1

Nominal wire diameter

Nominal wire diameter

Maximum deviation for wire diameter

increased accuracy

normal accuracy

increased accuracy

normal accuracy

Notes:

1. At the request of the consumer, the supply of wire of intermediate diameters is allowed. In this case, the maximum deviations in diameter must correspond to those established for the nearest larger diameter.

2. The theoretical mass of the wire is given in Appendix 1.

1.1, 1.2. (Changed edition, Rev. 3, 4).

1.3. The ovality of the wire should not exceed half the diameter tolerance range.

Examples of symbols:

Wire grade A, class 1, increased precision, diameter 1.20 mm:

The same, brand B, class 3, normal accuracy, diameter 2.0 mm:

The same, brand B, class 2A, increased accuracy, diameter 1.20 mm:

2. TECHNICAL REQUIREMENTS

2.1. Steel carbon spring wire must be manufactured in accordance with the requirements of this standard according to technological regulations approved in the prescribed manner, from carbon steel in accordance with GOST 1050, GOST 14959, GOST 1435 or according to regulatory and technical documentation, as well as from steel grades KT-2 and 3K -7, the chemical composition of which is indicated in table. 2, and other special smelting steels manufactured according to regulatory and technical documentation. In this case, class 2A wire must be made of steel with a mass fraction of sulfur not exceeding 0.030% and phosphorus not exceeding 0.035%.

At the request of the consumer, the wire is made of steel of a certain grade.

Table 2

Steel grade

Chemical composition, %

Manganese

(Changed edition, Amendment No. 2, 3).

2.2. The surface of the wire should be free of cracks, caps, dulls, hairlines, shells and rust.

Risks with a depth of no more than half the diameter tolerance field are allowed, as well as remnants of technological coatings applied to the surface of the wire to prepare the metal for drawing.

Class 2A wire for the aviation industry must be without traces of technological copper plating on the surface.

(Changed edition, Amendment No. 3).

2.3. The mechanical properties of the wire must comply with the standards specified in table. 3. The mechanical properties of wire of intermediate diameters must comply with the standards established for the nearest larger diameter (see Table 3).

2.4. Complete decarburization of the wire is not allowed.

The depth of partial decarburization should not exceed 1.5% of the nominal diameter on wire grade A, class 1 and grade B, classes 1, 2A; grade B, class 2-2.5%; grade B, class 3-3%.

2.5. At the consumer's request, wire of grades A and B should not break or crack when coiled or bent. Wire with a diameter of up to 3.0 mm must be wound around a cylindrical core equal to the diameter of the wire, and with a diameter of 3.0 mm or more must be either bent 180° or coiled.

In this case, the diameter of the cylindrical core must be equal to two wire diameters for wire from 3.0 to 6.0 mm and three wire diameters for wire over 6.0 mm. A cylindrical core of smaller diameter is acceptable.

The number of turns when winding must be at least eight.

2.4, 2.5. (Changed edition, Amendment No. 3, 4).

2.5a. At the consumer's request, wire of grades A and B should not delaminate when tested for torsion.

Delamination refers to cracks running along a helix along the surface of the sample.

The main break should be smooth and perpendicular to the axis of the wire.

2.5b. Wire waviness is not allowed.

Waviness is understood as a periodic change in diameter or periodic bending of the wire, which persists when a load not exceeding 0.3 of the breaking force of the wire is applied to a sample of wire with a working length of (200 ± 0.5) mm.

2.5a, 2.5b. (Introduced additionally, Amendment No. 3).


Table 3

Wire diameter, mm

Tensile strength, N/mm 2 (kgf/mm 2)

Range of tensile strength in a batch, N/mm 2 (kgf/mm 2), no more

Number of twists, not less

Brands A, B Brand C

Classes 2, 2A

2740 - 3090 (280 - 315)

2300 - 2740 (235 - 280)

1810 - 2300 (185 - 235)

2740 - 3090 (280 - 315)

2300 - 2740 (235 - 280)

1810 - 2300 (185 - 235)

2740 - 3090 (280 - 315)

2300 - 2740 (235 - 280)

1810 - 2300 (185 - 235)

2740 - 3090 (280 - 315)

2300 - 2740 (235 - 280)

1810 - 2300 (185 - 235)

2700 - 3040 (275 - 310)

2260 - 2700 (230 - 275)

1770 - 2260 (180 - 230)

2700 - 3040 (275 - 310)

2260 - 2700 (230 - 275)

1770 - 2260 (180 - 230)

2700 - 3040 (275 - 310)

2260 - 2700 (230 - 275)

1770 - 2260 (180 - 230)

2700 - 3040 (275 - 310)

2260 - 2700 (230 - 275)

1770 - 2260 (180 - 230)

2700 - 3040 (275 - 310)

2260 - 2700 (230 - 275)

1770 - 2260 (180 - 230)

2650 - 2990 (270 - 305)

2210 - 2650 (225 - 270)

1720 - 2210 (175 - 225)

2650 - 2990 (270 - 305)

2210 - 2650 (225 - 270)

1720 - 2210 (175 - 225)

2600 - 2940 (265 - 300)

2160 - 2600 (220 - 265)

1670 - 2160 (170 - 220)

2600 - 2940 (265 - 300)

2160 - 2600 (220 - 265)

1670 - 2160 (170 - 220)

2600 - 2940 (265 - 300)

2160 - 2600 (220 - 265)

1670 - 2160 (170 - 220)

2600 - 2940 (265 - 300)

2160 - 2600 (220 - 265)

1670 - 2160 (170 - 220)

2600 - 2940 (265 - 300)

2160 - 2600 (220 - 265)

1670 - 2160 (170 - 220)

2550 - 2890 (260 - 295)

2160 - 2550 (220 - 260)

1670 - 2160 (170 - 220)

2550 - 2890 (260 - 295)

2160 - 2550 (220 - 260)

1670 - 2160 (170 - 220)

2550 - 2890 (260 - 295)

2110 - 2550 (215 - 260)

1670 - 2110 (170 - 215)

2500 - 2790 (255 - 285)

2110 - 2500 (215 - 255)

1620 - 2110 (165 - 215)

2450 - 2740 (250 - 280)

2060 - 2450 (210 - 250)

1570 - 2060 (160 - 210)

2400 - 2700 (245 - 275)

2010 - 2400 (205 - 245)

1520 - 2010 (155 - 205)

2350 - 2650 (240 - 270)

1960 - 2350 (200 - 240)

1520 - 1960 (155 - 200)

2300 - 2600 (235 - 265)

1960 - 2300 (200 - 235)

1520 - 1960 (155 - 200)

2260 - 2550 (230 - 260)

1910 - 2260 (195 - 230)

1470 - 1960 (150 - 200)

2210 - 2500 (225 - 255)

1860 - 2210 (190 - 225)

1420 - 1860 (145 - 190)

2160 - 2450 (220 - 250)

1860 - 2160 (190 - 220)

1420 - 1860 (145 - 190)

2060 - 2350 (210 - 240)

1770 - 2060 (180 - 210)

1370 - 1770 (140 - 180)

2060 - 2350 (210 - 240)

1770 - 2060 (180 - 210)

1370 - 1770 (140 - 180)

2010 - 2300 (205 - 235)

1770 - 2010 (180 - 205)

1370 - 1770 (140 - 180)

2010 - 2260 (205 - 230)

1770 - 2010 (180 - 205)

1370 - 1770 (140 - 180)

1960 - 2210 (200 - 225)

1720 - 1960 (175 - 200)

1370 - 1720 (140 - 175)

1910 - 2160 (195 - 220)

1670 - 1910 (170 - 195)

1320 - 1670 (135 - 170)

1910 - 2160 (195 - 220)

1670 - 1910 (170 - 195)

1320 - 1670 (135 - 170)

1810 - 2060 (185 - 210)

1620 - 1860 (165 - 190)

1270 - 1620 (130 - 165)

1770 - 2010 (180 - 205)

1620 - 1860 (165 - 190)

1270 - 1620 (130 - 165)

1720 - 1960 (175 - 200)

1620 - 1860 (165 - 190)

1270 - 1620 (130 - 165)

1720 - 1960 (175 - 200)

1520 - 1770 (155 - 180)

1230 - 1520 (125 - 155)

1670 - 1910 (170 - 195)

1520 - 1770 (155 - 180)

1230 - 1520 (125 - 155)

1670 - 1910 (170 - 195)

1520 - 1770 (155 - 180)

1230 - 1520 (125 - 155)

1620 - 1860 (165 - 190)

1470 - 1720 (150 - 175)

1180 - 1470 (120 - 150)

1570 - 1810 (160 - 185)

1420 - 1670 (145 - 170)

1130 - 1420 (115 - 145)

1520 - 1770 (155 - 180)

1370 - 1620 (140 - 165)

1130 - 1370 (115 - 140)

1470 - 1720 (150 - 175)

1370 - 1620 (140 - 165)

1130 - 1370 (115 - 140)

1420 - 1670 (145 - 170)

1320 - 1570 (135 - 160)

1080 - 1320 (110 - 135)

1420 - 1670 (145 - 170)

1320 - 1570 (135 - 160)

1080 - 1320 (110 - 135)

1230 - 1420 (125 - 145)

1030 - 1230 (105 - 125)

1230 - 1420 (125 - 145)

1030 - 1230 (105 - 125)

1230 - 1420 (125 - 145)

1030 - 1230 (105 - 125)

1230 - 1420 (125 - 145)

1030 - 1230 (105 - 125)

1230 - 1420 (125 - 145)

1030 - 1230 (105 - 125)

1230 - 1420 (125 - 145)

1030 - 1230 (105 - 125)

Notes:

1. The value of the run-up in tensile strength in coils (coils) weighing up to 250 kg of grades A and B of classes 1, 2, 2A should be no more than 100 N/mm 2 (10 kgf/mm 2); grade B class 3 and grade B of all classes for wire with a diameter of 1.6 mm and less - 200 N/mm 2 (20 kgf/mm 2), and for wire with a diameter of more than 1.6 mm - 150 N/mm 2 (15 kgf /mm 2). The value of the run-up in the temporary tensile strength of wire in coils (coils) weighing more than 250 kg must correspond to the values ​​in table. 3.

2. If, when determining the tensile strength at the ends of a coil, the test results belong to two classes, then the membership of the coil in one of the classes is determined by the lower value. In this case, the larger value should not exceed the upper limit of the normalized tensile strength for the class to which the coil belongs by more than 50 (5) N/mm 2 (kgf/mm 2). This note is not taken into account if the wire belongs to grades A and B of class 2A of all diameters and class 2 with a diameter of 2.5 mm or more.

3. At the request of the furniture industry, wire with a diameter of 2.2 mm, high-precision grade B, is manufactured with a tensile strength of 1570 - 1770 N/mm 2 (160 - 180 kgf/mm 2).

(Changed edition, Amendment No. 3, 4, 5, Amendment).


2.6. The wire must be produced in coils or on spools.

Winding of wire should be done without interchanging the turns and ensure free winding of the wire from the spools and skeins. When releasing the skein from the ties, the wire should not curl into a figure eight.

The skein should consist of one piece of wire.

No more than three pieces of wire are allowed on a reel or coil weighing more than 250 kg. In places where the sections separate, bookmarks must be laid. Instead of marking the separation points, it is allowed to draw out and secure the ends of the segments on the cheek of the reel.

Tying the ends of wire sections is not allowed.

2.7. The weight of a piece of wire in a coil or on a reel must correspond to that indicated in the table. 5.

Table 5 *

* Table 4. (Deleted, Amendment No. 3).

The weight of wire pieces allowed is 50% less than that indicated in the table. 5 in an amount of no more than 10% of the total mass of wire in the batch.

At the request of the consumer, the mass of the skein (reel) should not exceed 1 ton.

2.6, 2.7. (Changed edition, Amendment No. 3).

3. ACCEPTANCE RULES

3.1. Wire is accepted in batches. The batch must consist of coils or coils of wire of the same diameter, the same class and the same manufacturing accuracy and must be documented with a quality document containing:

batch number;

number of cargo spaces;

net weight;

steel grade;

acceptance date.

(Changed edition, Amendment No. 2).

3.2. By size and appearance Each skein or reel of the batch is checked.

3.3. To check mechanical properties and waviness, if there is disagreement in the assessment of this indicator, 10% of the skeins or 20% of the coils are selected, but not less than five skeins or spools, and to check the decarbonization of 2% of the skeins or spools, but not less than three.

(Changed edition, Amendment No. 3).

3.4. If unsatisfactory test results are obtained for at least one of the indicators, a repeat test is carried out for this indicator on a double number of skeins (coils) taken from those that did not pass the test. Results repeated tests apply to the entire party.

If unsatisfactory results of repeated tests are obtained in terms of wire waviness, the manufacturer carries out continuous monitoring of this indicator.

4. TEST METHODS

4.1. For each type of test, one sample is taken from both ends of the skein for each type of test or one sample from each coil being tested.

(Changed edition, Amendment No. 1).

4.2. The diameter and ovality of the wire are measured with micrometers in accordance with GOST 6507 and GOST 4381 in two mutually perpendicular directions of the same section of the wire or with another measuring instrument that provides the necessary measurement accuracy.

(Changed edition, Amendment No. 3).

4.3. Inspection of the wire surface is carried out visually, and in controversial cases, using a five-fold magnifying glass. The depth of the wire defect should be determined by removing it by stripping, followed by comparative measurements of the wire in stripped and uncleaned areas. If it is impossible to determine the depth of the defect by cleaning, the depth and nature of the defect is determined by micro-examination.

4.4. Testing of wire for temporary resistance is carried out according to GOST 10446.

4.5. The bending test of the wire is carried out around a cylindrical core until the sides are parallel in accordance with the requirements of clause 2.5.

(Changed edition, Amendment No. 4).

4.6. The torsion test is carried out according to GOST 1545, in which the length of the tested part of the sample is set equal to 100 d(d - wire diameter), but not less than 50 and not more than 500 mm.

The non-delamination torsion test is carried out until the sample is completely destroyed.

Inspection of fractures is carried out with the naked eye. For wires with a diameter of less than 0.8 mm, a five-fold magnification magnifying glass can be used.

Note. Until 01.01.90, testing of wire for non-delamination was carried out by agreement between the manufacturer and the consumer.

(Changed edition, Amendment No. 3, 5, Amendment).

4.7. Determination of the depth of decarburization is carried out according to the M GOST 1763 method.

4.8. Wire coiling testing is carried out according to GOST 10447.

If disagreements arise in assessing the quality of the wire according to clause 2.5, instead of the coiling test, a bending test is performed.

(Changed edition, Amendment No. 3).

4.9. The absence of waviness is ensured by the manufacturing technology.

If disagreements arise in the assessment of waviness, it is determined on samples with a working length of (200 ± 0.5) mm with a micrometer in accordance with GOST 6507, equipped with a special heel (Appendix 2), using 10 measurements in two mutually perpendicular directions along the length of the sample.

The samples must be secured in the clamps of a tensile testing machine in accordance with GOST 28840 or another machine in accordance with regulatory and technical documentation that allows the required load to be applied.

The wire is considered wavy if the number of deviations from a constant diameter measured in one of the planes is 3 or more measurements.

The magnitude of the deviations must be greater than the error of the measuring instrument.

4.10. It is allowed to use statistical and non-destructive testing according to methods approved in accordance with the established procedure.

4.9, 4.10. (Introduced additionally, Amendment No. 3).

5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE

5.1. Each skein must be firmly tied with soft wire according to regulatory and technical documentation in at least three places evenly spaced around the circumference.

Rolls of wire with a diameter of 0.60 mm or less can be tied with the end of a wound wire or twine in accordance with GOST 17308 or other regulatory and technical documentation.

Skeins of the same class, group and diameter can be knitted into coils.

The end of the upper piece of wire on the reel should be secured to the cheek of the reel.

(Changed edition, Amendment No. 3).

5.2. The wire must be coated with preservation oils (lubricants) type NG-203A or NG-203B according to TU 38-1011331 or K-17 according to GOST 10877.

It is allowed to use other oils (lubricants) that provide protection against corrosion. Wire on spools may be supplied ungreased.

(Changed edition, Amendment No. 3, 5).

5.3. Reels with wire with a diameter of less than 0.20 mm must be wrapped in a layer of paper and placed in wooden boxes in accordance with GOST 18617 or other normative and technical documentation, or in metal containers made according to normative and technical documentation, lined with waterproof paper on the inside.

Hanks, coils of wire with a diameter of 0.20 mm or more must be wrapped in a layer of paper, then in a layer of polymer film or non-woven materials, or fabric made of chemical fibers. When mechanized packaging, coils of wire must be wrapped in a layer of cable crepe paper in accordance with GOST 10396 or KMV-170 grade paper, or other crepe paper with equivalent protective properties, or polymer film with the packaging secured with wire in accordance with GOST 3282 or other wire.

By agreement between the manufacturer and the consumer, the wire may not be packaged or lubricated.

The following are used as packaging materials:

waxed paper in accordance with GOST 9569 (it is allowed to use two-layer packaging paper in accordance with GOST 8828 or oiled packaging paper in accordance with GOST 8273 grade A, or other paper that provides corrosion protection);

(Changed edition, Amendment No. 1, 3).

5.3a. The weight of one piece of cargo must be no more than 1500 kg.

The consolidation of cargo items into transport packages must be carried out in accordance with GOST 21650, GOST 24597.

(Changed edition, Amendment No. 3).

5.4. Each spool, skein or coil of wire must have a label firmly attached to it indicating:

trademark or name and trademark of the manufacturer;

wire symbol;

technical control mark;

batch number.

(Changed edition, Amendment No. 1, 3).

5.5. (Deleted, Amendment No. 2).

5.6. Wire is transported by all types of transport in accordance with the rules for the transportation of goods in force for this type of transport. The placement and securing of cargo in vehicles must comply with technical specifications loading and securing cargo.

Transporting wire by railway carried out by carload, small or low-tonnage shipments.

It is allowed to transport wire in universal containers according to

INTERSTATE STANDARD

CARBON STEEL WIRE

SPRING

TECHNICAL CONDITIONS

Official publication

IPC PUBLISHING HOUSE OF STANDARDS Moscow

to GOST 9389-75 Carbon steel spring wire. Specifications

(IUS No. 7 2003)

to GOST 9389-75 Carbon steel spring wire. Technical specifications (see Amendment.V* 5, IMS “Chu 6-2002 and Edition (April 2003) with Amendments.4" 1, 2, 3, 4, 5)

(IUS No. 6 2007)

INTERSTATE STANDARD

CARBON STEEL SPRING WIRE

Specifications

Carbon steel spring wire.

MKS 77.140.65 OKP 12 2100

Date of introduction 01/01/77

This standard applies to cold-drawn carbon steel wire used for the manufacture of cold-wound springs that are not quenched.

1. TYPES AND MAIN DIMENSIONS

1.1. The wire is produced:

a) according to mechanical properties:

brands A, B, C,

b) in terms of manufacturing accuracy:

normal accuracy,

increased accuracy - P.

Wire of classes 1, 2, 3 is produced with normal and increased accuracy, class 2A - with increased accuracy.

1.2. The diameter of the wire and the maximum deviations along it must correspond to those indicated in the table. 1.

Official publication ★

Reproduction is prohibited

© Standards Publishing House, 1975 © IPK Standards Publishing House, 2003

Table 1

Nominal wire diameter

Nominal wire diameter

Maximum deviation for wire diameter

increased

accuracy

normal

accuracy

increased

accuracy

normal

accuracy

Notes:

1. At the request of the consumer, the supply of wire of intermediate diameters is allowed. In this case, the maximum deviations in diameter must correspond to those established for the nearest larger diameter.

2. The theoretical mass of the wire is given in Appendix 1.

1.1, 1.2. (Changed edition, Rev. 3, 4).

1.3. The ovality of the wire should not exceed half the diameter tolerance range.

Examples of symbols:

Wire grade A, class 1, increased precision, diameter 1.20 mm:

Wire A-1-P-1.2 GOST9389-75 The same, grade B, class 3, normal accuracy, diameter 2.0 mm:

Wire B-3-2 GOST 9389-75

The same, brand B, class 2A, increased accuracy, diameter 1.20 mm:

Wire B-2A-1.2 GOST 9389-75 (Changed edition, Amendment No. 3).

2. TECHNICAL REQUIREMENTS

2.1. Steel carbon spring wire must be manufactured in accordance with the requirements of this standard according to technological regulations approved in the prescribed manner, from carbon steel in accordance with GOST 1050, GOST 14959, GOST 1435 or according to normative technical documentation, as well as from steel grades KT-2 and ZK-7 , the chemical composition of which is indicated in table. 2, and other special smelting steels manufactured according to regulatory and technical documentation. In this case, class 2A wire must be made of steel with a mass fraction of sulfur not exceeding 0.030% and phosphorus not exceeding 0.035%.

At the request of the consumer, the wire is made of steel of a certain grade.

Table 2

(Changed edition, Amendment No. 2, 3).

2.2. The surface of the wire should be free of cracks, caps, dulls, hairlines, shells and rust.

Risks with a depth of no more than half the diameter tolerance field are allowed, as well as remnants of technological coatings applied to the surface of the wire to prepare the metal for drawing.

Class 2A wire for the aviation industry must be without traces of technological copper plating on the surface.

(Changed edition, Amendment No. 3).

2.3. The mechanical properties of the wire must comply with the standards specified in table. 3.

The mechanical properties of wire of intermediate diameters must comply with the standards established for the nearest larger diameter (see Table 3).

2.4. Complete decarburization of the wire is not allowed.

The depth of partial decarburization should not exceed 1.5% of the nominal diameter on wire grade A, class 1 and grade B, classes 1, 2A; grade B, class 2-2.5%; grade B, class 3-3%.

2.5. At the consumer's request, wire of grades A and B should not break or crack when coiled or bent. Wire with a diameter of up to 3.0 mm must be wound around a cylindrical core equal to the diameter of the wire, and with a diameter of 3.0 mm or more must be either bent 180° or coiled.

In this case, the diameter of the cylindrical core must be equal to two wire diameters for wire from 3.0 to 6.0 mm and three wire diameters for wire over 6.0 mm. A cylindrical core of smaller diameter is acceptable.

The number of turns when winding must be at least eight.

2.4, 2.5. (Changed edition, Amendment No. 3, 4).

2.5a. At the consumer's request, wire of grades A and B should not delaminate when tested for torsion.

Delamination refers to cracks running along a helix along the surface of the sample.

The main break should be smooth and perpendicular to the axis of the wire.

2.56. Wire waviness is not allowed.

Waviness is understood as a periodic change in diameter or periodic bending of the wire, which persists when a load not exceeding 0.3 of the breaking force of the wire is applied to a sample of wire with a working length of (200 ± 0.5) mm.

2.5a, 2.56. (Introduced additionally, Amendment No. 3).

Number of twists, not

Brands A, B

Classes 2, 2A

2740-3090 (280-315)

2300-2740 (235-280)

1810-2300 (185-235)

2740-3090 (280-315)

2300-2740 (235-280)

1810-2300 (185-235)

2740-3090 (280-315)

2300-2740 (235-280)

1810-2300 (185-235)

2740-3090 (280-315)

2300-2740 (235-280)

1810-2300 (185-235)

2700-3040 (275-310)

2260-2700 (230-275)

1770-2260 (180-230)

2700-3040 (275-310)

2260-2700 (230-275)

1770-2260 (180-230)

2700-3040 (275-310)

2260-2700 (230-275)

1770-2260 (180-230)

2700-3040 (275-310)

2260-2700 (230-275)

1770-2260 (180-230)

2700-3040 (275-310)

2260-2700 (230-275)

1770-2260 (180-230)

2650-2990 (270-305)

2210-2650 (225-270)

1720-2210 (175-225)

2650-2990 (270-305)

2210-2650 (225-270)

1720-2210 (175-225)

2600-2940 (265-300)

2160-2600 (220-265)

1670-2160 (170-220)

2600-2940 (265-300)

2160-2600 (220-265)

1670-2160 (170-220)

2600-2940 (265-300)

2160-2600 (220-265)

1670-2160 (170-220)

2600-2940 (265-300)

2160-2600 (220-265)

1670-2160 (170-220)

2600-2940 (265-300)

2160-2600 (220-265)

1670-2160 (170-220)

2550-2890 (260-295)

2160-2550 (220-260)

1670-2160 (170-220)

2550-2890 (260-295)

2160-2550 (220-260)

1670-2160 (170-220)

2550-2890 (260-295)

2110-2550 (215-260)

1670-2110 (170-215)

2500-2790 (255-285)

2110-2500 (215-255)

1620-2110 (165-215)

2450-2740 (250-280)

2060-2450 (210-250)

1570-2060 (160-210)

2400-2700 (245-275)

2010-2400 (205-245)

1520-2010 (155-205)

2350-2650 (240-270)

1960-2350 (200-240)

1520-1960 (155-200)

2300-2600 (235-265)

1960-2300 (200-235)

1520-1960 (155-200)

2260-2550 (230-260)

1910-2260 (195-230)

1470-1960 (150-200)

2210-2500 (225-255)

1860-2210 (190-225)

1420-1860 (145-190)

2160-2450 (220-250)

1860-2160 (190-220)

1420-1860 (145-190)

GOST 9389-75 S. 4

Continuation of the table. 3

Tensile strength, N/mm 2 (kgf/mm 2)

Range of tensile strength in a batch, N/mm 2 (kgf/mm 2), no more

Number of twists, not

Brands A, B

Classes 2, 2A

2060-2350 (210-240)

1770-2060 (180-210)

1370-1770 (140-180)

2060-2350 (210-240)

1770-2060 (180-210)

1370-1770 (140-180)

2010-2300 (205-235)

1770-2010 (180-205)

1370-1770 (140-180)

2010-2260 (205-230)

1770-2010 (180-205)

1370-1770 (140-180)

1960-2210 (200-225)

1720-1960 (175-200)

1370-1720 (140-175)

1910-2160 (195-220)

1670-1910 (170-195)

1320-1670 (135-170)

1910-2160 (195-220)

1670-1910 (170-195)

1320-1670 (135-170)

1810-2060 (185-210)

1620-1860 (165-190)

1270-1620 (130-165)

1770-2010 (180-205)

1620-1860 (165-190)

1270-1620 (130-165)

1720-1960 (175-200)

1620-1860 (165-190)

1270-1620 (130-165)

1720-1960 (175-200)

1520-1770 (155-180)

1230-1520 (125-155)

1670-1910 (170-195)

1520-1770 (155-180)

1230-1520 (125-155)

1670-1910 (170-195)

1520-1770 (155-180)

1230-1520 (125-155)

1620-1860 (165-190)

1470-1720 (150-175)

1180-1470 (120-150)

1570-1810 (160-185)

1420-1670 (145-170)

1130-1420 (115-145)

1520-1770 (155-180)

1370-1620 (140-165)

1130-1370 (115-140)

1470-1720 (150-175)

1370-1620 (140-165)

1130-1370 (115-140)

1420-1670 (145-170)

1320-1570 (135-160)

1080-1320 (110-135)

1420-1670 (145-170)

1320-1570 (135-160)

1080-1320 (110-135)

1230-1420 (125-145)

1030-1230 (105-125)

1230-1420 (125-145)

1030-1230 (105-125)

1230-1420 (125-145)

1030-1230 (105-125)

1230-1420 (125-145)

1030-1230 (105-125)

1230-1420 (125-145)

1030-1230 (105-125)

1230-1420 (125-145)

1030-1230 (105-125)

Notes:

1. The value of the run-up in tensile strength in coils (coils) weighing up to 250 kg of grades A and B of classes 1, 2, 2A should be no more than 100 N/mm 2 (10 kgf/mm 2); grade B class 3 and grade B of all classes for wire with a diameter of 1.6 mm and less - 200 N/mm 2 (20 kgf/mm 2), and for wire with a diameter of more than 1.6 mm - 150 N/mm 2 (15 kgf /mm 2). The value of the run-up in the temporary tensile strength of wire in coils (coils) weighing more than 250 kg must correspond to the values ​​in table. 3.

2. If, when determining the tensile strength at the ends of a coil, the test results belong to two classes, then the membership of the coil in one of the classes is determined by the lower value. In this case, the larger value should not exceed the upper limit of the standardized tensile strength for the class to which the coil belongs by more than 50 (5) N/mm 2 (kgf/mm 2). This note is not taken into account if the wire belongs to grades A and B of class 2A of all diameters and class 2 with a diameter of 2.5 mm or more.

3. At the request of the furniture industry, wire with a diameter of 2.2 mm, high-precision grade B, is manufactured with a tensile strength of 1570-1770 N/mm 2 (160-180 kgf/mm 2).

(Changed edition, Amendment No. 3, 4, 5, Amendment).

S. 5 GOST 9389-75

2.6. The wire must be produced in coils or on spools.

Winding of wire should be done without interchanging the turns and ensure free winding of the wire from the spools and skeins. When releasing the skein from the ties, the wire should not curl into a figure eight.

The skein should consist of one piece of wire.

No more than three pieces of wire are allowed on a reel or coil weighing more than 250 kg. In places where the sections separate, bookmarks must be laid. Instead of marking the separation points, it is allowed to draw out and secure the ends of the segments on the cheek of the reel.

Tying the ends of wire sections is not allowed.

2.7. The weight of a piece of wire in a coil or on a reel must correspond to that indicated in the table. 5.

Table 5*

The weight of wire pieces allowed is 50% less than that indicated in the table. 5 in an amount of no more than 10% of the total mass of wire in the batch.

At the request of the consumer, the mass of the skein (reel) should not exceed 1 ton.

2.6, 2.7. (Changed edition, Amendment No. 3).

3. ACCEPTANCE RULES

3.1. Wire is accepted in batches. The batch must consist of coils or coils of wire of the same diameter, the same class and the same manufacturing accuracy and must be documented with a quality document containing:

batch number;

number of cargo spaces;

net weight;

steel grade;

acceptance date.

(Changed edition, Amendment No. 2).

3.2. Each skein or reel of the batch is checked for size and appearance.

3.3. To check the mechanical properties and waviness, if there is disagreement in the assessment of this indicator, 10% of the skeins or 20% of the coils are selected, but not less than five skeins or spools, and to check the decarbonization of 2% of the skeins or spools, but not less than three.

(Changed edition, Amendment No. 3).

3.4. If unsatisfactory test results are obtained for at least one of the indicators, a repeat test is carried out for this indicator on a double number of skeins (coils) taken from those that did not pass the test. The results of repeated tests apply to the entire batch.

If unsatisfactory results of repeated tests are obtained in terms of wire waviness, the manufacturer carries out continuous monitoring of this indicator.

* Table 4. (Deleted, Amendment No. 3).

4. TEST METHODS

4.1. For each type of test, one sample is taken from both ends of the skein for each type of test or one sample from each coil being tested.

(Changed edition, Amendment No. 1).

4.2. The diameter and ovality of the wire are measured with micrometers in accordance with GOST 6507 and GOST 4381 in two mutually perpendicular directions of the same section of the wire or with another measuring instrument that provides the necessary measurement accuracy.

(Changed edition, Amendment No. 3).

4.3. Inspection of the wire surface is carried out visually, and in controversial cases, using a five-fold magnifying glass. The depth of the wire defect should be determined by removing it by stripping, followed by comparative measurements of the wire in stripped and uncleaned areas. If it is impossible to determine the depth of a defect by cleaning, the depth and nature of the defect is determined by microstudy.

4.4. Testing the wire for temporary resistance and rupture with the node is carried out according to GOST 10446.

4.5. The bending test of the wire is carried out around a cylindrical core until the sides are parallel in accordance with the requirements and. 2.5.

(Changed edition, Amendment No. 4).

4.6. The torsion test is carried out according to GOST 1545, with the length of the test part of the sample being set equal to lOOd (d is the wire diameter), but not less than 50 and not more than 500 mm.

Inspection of fractures is carried out with the naked eye. For wires with a diameter of less than 0.8 mm, a five-fold magnification magnifying glass can be used.

Note. Until 01.01.90, testing of wire for non-delamination was carried out by agreement between the manufacturer and the consumer.

4.7. Determination of the depth of decarburization is carried out according to the M method of GOST 1763.

4.8. Wire coiling testing is carried out according to GOST 10447.

If disagreements arise in assessing the quality of wire according to i. 2.5 instead of the coiling test, a bending test is carried out.

(Changed edition, Amendment No. 3).

4.9. The absence of waviness is ensured by the manufacturing technology.

If disagreements arise in the assessment of waviness, it is determined on samples with a working length of (200 ± 0.5) mm with a micrometer in accordance with GOST 6507, equipped with a special heel (Appendix 2), using 10 measurements in two mutually perpendicular directions along the length of the sample.

The samples must be secured in the clamps of a tensile testing machine in accordance with GOST 28840 or another machine in accordance with regulatory and technical documentation that allows the required load to be applied.

The wire is considered wavy if the number of deviations from a constant diameter measured in one of the planes is 3 or more measurements.

The magnitude of the deviations must be greater than the error of the measuring instrument.

4.10. To determine mechanical properties, it is allowed to use statistical and non-destructive testing methods according to methods approved in the prescribed manner.

4.9, 4.10. (Introduced additionally, Amendment No. 3).

5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE

5.1. Each skein must be firmly tied with soft wire according to regulatory and technical documentation in at least three places evenly spaced around the circumference.

Rolls of wire with a diameter of 0.60 mm or less can be tied with the end of a wound wire or twine in accordance with GOST 17308 or other regulatory and technical documentation. Skeins of the same class, group and diameter can be knitted into coils.

The end of the upper piece of wire on the reel should be secured to the cheek of the reel. (Changed edition, Amendment No. 3).

5.2. The wire must be coated with preservative oils (lubricants) type NG-203A or NG-203B according to TU 38-1011331 or K-17 according to GOST 10877.

It is allowed to use other oils (lubricants) that provide protection against corrosion. Wire on spools may be supplied ungreased.

(Changed edition, Amendment No. 3, 5).

5.3. Reels with wire with a diameter of less than 0.20 mm must be wrapped in a layer of paper and placed in wooden boxes in accordance with GOST 18617 or other normative and technical documentation, or in metal containers made according to normative and technical documentation, lined with waterproof paper on the inside.

Hanks, coils of wire with a diameter of 0.20 mm or more must be wrapped in a layer of paper, then in a layer of polymer film or non-woven materials, or fabric made of chemical fibers. When mechanized packaging, coils of wire must be wrapped in a layer of cable crepe paper in accordance with GOST 10396 or KMV-170 grade paper, or other crepe paper with equivalent protective properties, or polymer film with the packaging secured with wire in accordance with GOST 3282 or other wire.

By agreement between the manufacturer and the consumer, the wire may not be packaged or lubricated.

The following are used as packaging materials:

waxed paper in accordance with GOST 9569 (it is allowed to use two-layer packaging paper in accordance with GOST 8828 or oiled packaging paper in accordance with GOST 8273 grade A, or other paper that provides corrosion protection);

polymer film according to GOST 10354, GOST 16272 or other polymer film;

containerized canvas stitched or glued fabric, stitching tape from textile industry waste or fabric from chemical fibers according to regulatory and technical documentation.

Wire sent to the Far North and equivalent areas is packaged in accordance with GOST 15846.

(Changed edition, Amendment No. 1, 3).

5.3a. The weight of one piece of cargo must be no more than 1500 kg.

The consolidation of cargo items into transport packages must be carried out in accordance with GOST 21650, GOST 24597.

(Changed edition, Amendment No. 3).

5.4. Each spool, skein or coil of wire must have a label firmly attached to it indicating:

trademark or name and trademark of the manufacturer;

wire symbol;

technical control mark;

batch number.

(Changed edition, Amendment No. 1, 3).

5.5. (Deleted, Amendment No. 2).

5.6. Wire is transported by all types of transport in accordance with the rules for the transportation of goods in force for this type of transport. The placement and securing of cargo in vehicles must comply with the technical conditions for loading and securing cargo.

Wire transportation by rail is carried out by carload, small or low-tonnage shipments.

It is allowed to transport wire in universal containers in accordance with GOST 15102, GOST 20435, GOST 22225.

Transportation conditions must comply with storage conditions 5 GOST 15150.

5.7. Wire storage is according to storage conditions 3 GOST 15150.

5.6, 5.7. (Changed edition, Amendment No. 3).

5.8. Transport marking - according to GOST 14192.

(Introduced additionally, Amendment No. 3).

APPENDIX 1 Reference

THEORETICAL WEIGHT OF 1000 m WIRE

Wire diameter, mm

Cross-sectional area, mm 2

Weight 1000 m, kg

Wire diameter, mm

Cross-sectional area, mm2

Weight 1000 m, kg

APPENDIX 2

Mandatory

Special heel for micrometer type MK according to GOST 9389-75 for determining wire waviness

Material - steel ШХ-15, У10А, У12А. Hardness - HRC 48-50.

where A Ov is the run-up of temporary tensile strength in the batch, N/mm 2;

Ov - the minimum value of tensile strength in the class, N/mm 2.

APPENDICES 2, 3. (Introduced additionally, Amendment No. 3).

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the USSR Ministry of Ferrous Metallurgy

2. APPROVED AND ENTERED INTO EFFECT by Resolution of the State Committee of Standards of the Council of Ministers of the USSR dated July 17, 1975 No. 1830

Change No. 5 was adopted by the Interstate Council for Standardization, Metrology and Certification (Minutes No. 20 of November 1, 2001)

State name

Name of the national standardization body

Azerbaijan Republic

Azgosstandart

Republic of Armenia

Armgosstandard

Republic of Belarus

State Standard of the Republic of Belarus

Republic of Kazakhstan

Gosstandart of the Republic of Kazakhstan

Kyrgyz Republic

Kyrgyzstandard

Republic of Moldova

Moldovastandard

Russian Federation

Gosstandart of Russia

Republic of Tajikistan

T ajikstandard

Turkmenistan

Main State Service "Turkmenstandartlary"

Republic of Uzbekistan

Uzgosstandart

State Standard of Ukraine

3. INSTEAD GOST 9389-60

4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

Item number

Item number

GOST 1050-88

GOST 14192-96

GOST 1435-99

GOST 14959-79

GOST 1763-68

GOST 15102-75

GOST 3282-74

GOST 15150-69

GOST 4381-87

GOST 15846-2002

GOST 6507-90

GOST 16272-79

GOST 8273-75

GOST 17308-88

GOST 8828-89

GOST 18617-83

GOST 9569-79

GOST 20435-75

GOST 10354-82

GOST 21650-76

GOST 10396-84

GOST 22225-76

GOST 10446-80

GOST 24597-81

GOST 10447-93

GOST 28840-90

GOST 10877-76

TU 38-1011331-90

5. The validity period was lifted according to Protocol No. 2-92 of the Interstate Council for Standardization, Metrology and Certification (IUS 2-93)

6. EDITION (April 2003) with Amendments No. 1, 2, 3, 4, 5, approved in February 1983, December 1984, December 1987, January 1990, March 2002 (IUS 5-83, 3-85, 3-88, 4-90, 6-2002), Amendment (IUS 9-97)

Editor L.I. Nakhimova Technical editor V.N. Prusakova Corrector M.V. Buchnaya Computer layout S.V. Ryabova

Ed. persons No. 02354 dated July 14, 2000. Delivered for recruitment on 04/16/2003. Signed for publication on June 16, 2003. Cond.bake.l. 1.40. Academician-ed.l. 1.20.

Circulation 400 copies. From 10815. Zak. 511.

IPK Standards Publishing House, 107076 Moscow, Kolodezny per., 14. e-mail:

Typed at the Publishing House on a PC

Branch of IPK Standards Publishing House - type. “Moscow Printer”, 105062 Moscow, Lyalin lane, 6.