GB/T 4357-1989 Carbon spring steel wire

This standard specifies the classification, size, shape, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of carbon spring steel wire. This standard applies to cold-drawn carbon spring steel wire with circular cross section for machinery. GB/T 4357-1989 Carbon spring steel wire GB/T4357-1989 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
1 Subject content and scope of application
Carbon spring steel wires
GB 4357-- -89
Replaces GB 4357R4
This standard specifies the classification, size, shape, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of carbon spring steel wires.
This standard applies to cold-drawn carbon spring steel wires with round bearing surface for mechanical use. 2 Reference standards
Metal pulling test method
Metal wire torsion test method
Dimensions, shape, weight and allowable deviations of cold drawn round steel wire GB342
GB1298
GB2103
GB4354
GB6397
3 Classification and code
Technical conditions for carbon tool steel
General establishment for steel wire acceptance, packaging, marking and quality certificateMetal wire winding test method
High-quality carbon steel wire rod
Metal tensile test specimen
According to the purpose, steel wire is divided into two levels:
Grade B: for low stress springs
Grade C: for medium stress springs
Grade D: for high stress springs.
4 Dimensions, shape and weight
4.1 Dimensions
4.1.1 Diameter range of wire
B grade: 0.08~-13.00mm;
C grade: 0.08~-13.00rm
D grade: 0. 08.~6. 00 mm.
4.1.2 The diameter of the wire shall comply with the provisions of Table 1 of GB342. According to the requirements of the purchaser, intermediate-sized wires can be supplied. 4.1.3 The allowable tolerance of the wire diameter shall comply with the provisions of h11 grade in Table 3 of GB342. 4.2 Shape
4.2.1 The roundness of the wire shall not be greater than half of the allowable tolerance. 4.2.2 The wire coil shall be regular and shall not be scattered, twisted or distorted when the wire coil is opened. Approved by the Ministry of Metallurgical Industry of the People's Republic of China on February 2, 1989 and implemented on January 1, 1990
4.3 Weight
GB4357
Each coil shall consist of one calcium wire, and the weight of the wire coil shall conform to the requirements of Table 1. Table
Wire diameter
> 0. 10--0. 20
>0. 20~~0. 30
≥0. 30~ 0. 80
>0. 80~1. 20
4.4 Marking example
Order by tensile strength level:
Minimum coil weight
Wire diameter
2-1. 24~1. 80
>1. 80~3 00
×3. 00-~6. 00
> 5. 00 ~~ 8. 00
>8. 00~ 13. 00
Minimum coil weight
Mechanical property is D The carbon spring steel wire with the mechanical properties of grade D, diameter of 1.00 mm and allowable diameter deviation of grade h11 made of T9A is marked as: Carbon spring steel wire
Order by steel type and tensile strength level:
1.00 h11 GB 342-82
D-GB 4357—89
The carbon spring steel wire with the mechanical properties of grade D, diameter of 1.00 mm and allowable diameter deviation of grade h11 made of T9A is marked as:
Carbon spring steel wire
5 Technical requirements
5.1 Brand and chemical composition
1.00-h11-GB 342
T9A·DGB435789
5.1.1 The steel wire shall be manufactured with the brands specified in GB4354-89 and CB1298. It can also be made of other brands of wire rods of equivalent quality. 5.1.2 The phosphorus content of wire rods for steel wire shall not exceed 0.030%, and the sulfur content shall not exceed 0.020%. 5.2 Mechanical properties
The tensile strength of steel wire shall comply with the provisions of Table 2. The tensile strength of intermediate-sized steel wire shall comply with the provisions of the adjacent larger size. Table 2
2400~2800
2 350~2750
23002700
2250-2650
2200~2 600
2 1502 550
2 150~2 550
2150~2550
2743140
2690--3090
2 650~3040
2600~2990
2550~2940
2500-2890
2 45~2 840
2 4--29
2840~3240
2 840--3 240
2 790--3 190
2740--3140
2 740~3 140
2690·~3090
2 60~3 090
2 690--3 090
21102500
2 060-2 450
2 010--2400
2 010~2 400
1 960~3 350
19602350
1910--2300
1860226C
1 860 ~2 260
1811~2 210
1 760--2 160
1760~-2161
1730210
1 710~2 060
1710~2060
1660-~2 010
1 820--1 960
1 620 ~ 1 910
1 570~1 860
1520~181n
1 470~-1760
1:420--1 710
1 420-- 1 710
1 370~1 670
1 370 ~1 670
1320~1620
1320~1620
1320~1620
1 320 -1 570
1320~-1570
1870~1520
1220~1470
1220~1470
1170~1420
GB 4357 -89
Continued Table 2
Degree, MPa
2 350--2 750
2 300-2 700
230G-2 700
2 300~-2 700
22502 650
2 250-~2 650
2 250--2 650
2 200-~2 600
2 200--2 600
2150~2550
2 110~2 500
2110~2500
2060-2450
2 010~2 400
20J0--2350
19602 300
1910---2250
1860~2210
1 810-2 160
1760--2110
17102 010 | | tt | | 1660 ~ 1960 | | tt | | 1660 ~ 1966 |520~1760
1470--1710
1470~1710
1120~1660
1420~1 61
1 370--1 570
2 690~3 090
2 610~ 040
2 640~3 040
2 640~3 040
2 600·~2 990
2 600-2990
2 609--2 990
2 550~-2 910
2 550--2 940
2.500~2890
2 150~2 840
2450--2840
2450--2 840
2 400 ~-2 840
2 360~~2 730
2 300~2 690
2250-2550
2150~-2450
2110-2 400
2 0102300
1910--2 200
1 810-2 110
1760--2060
1710~2010
17101 960
1660~1910
1660~1910
1 620~:1 860
16201860
1570~1810
1:570--1810
1 520~1 760
5.3 Process performance
5.3.1 Torsion
117~42
1130~1.320
1 130--1 320
1 080~1 270
1080--1 270
1031~1220
GB 4357
Continued Table 2
Steel wire with a diameter not exceeding 6.00mm shall be subjected to a torsion test, and the number of torsion tests shall comply with the requirements of Table 3. Table 3
Wire diameter
2.00~3.00
3.00~4.00
>4.00~5.0m
>-5.00-- B. 00
Twist times (not less than)
When twisting, the steel wire shall be within the specified twist times, and there shall be no visible cracks and delamination on the surface. 5.3.2 Winding
The steel wire shall be wound according to the provisions of Table 1. The surface of the sample after winding shall not produce dust, cracks or fractures. Table 4
Wire winding period
R, C grade
5.3.3 Bending
Steel final convex diameter
Core diameter
Twist times
Steel wire with a diameter greater than 6.00mm shall be subjected to bending inspection. No cracks or fractures shall be produced on the surface of the sample after bending. 5.4 Surface quality
The surface of the pin wire shall be smooth and shall not have cracks, folds, thorns, rust or other harmful defects. However, individual small pulls and lubricating coatings with a depth not exceeding half of the diameter tolerance are allowed.
Test methods
The inspection methods, sampling quantity and test requirements for steel wire inspection items shall comply with the provisions of the table. No.
7 Inspection rules
Test items
Surface quality
Tensile test
Torsion test
Wanti test
GB 435789
Each batch of samples
By reel, double-end
By reel, double-hysteresis
Through reel, one end
10%, no less than
3 one end
7.1 Inspection and acceptance shall be carried out by the supplier's technical supervision department. 7.2 Batch rules
Test method
Use a scale to check the limit. If necessary, you can put more than 10 times the scale:
Test evaluation
The two ends are in different directions
Test requirements
The twisting number is the times of the wire diameter. When
The clamp is larger or smaller than 1D0
times of the wire diameter, the twisting number is proportional to the distance from the head to the head. In this case, it should be converted into the twisting number of 10D times the wire diameter.
R=10mm round
GB2976
Steel wires should be inspected and accepted in batches. Each batch should consist of wires of the same brand, strength level and diameter. 7.3 Retest
The retest of steel wire shall be carried out in accordance with the provisions of GB2103, with two tensile strength specimens and two torsion specimens. If one of the test results is unqualified, the unqualified item can be retested. At this time, a certain length should be removed from both ends of the steel wire coil and two specimens should be retested. The results must comply with the provisions of this standard. 8 Packaging, marking and quality certificate
The packaging, marking and quality certificate of steel wire shall comply with the provisions of GB 2103. The packaging type shall comply with the requirements of Class I and II. Other types shall be indicated in the contract.
Additional instructions:
This standard was drafted by the Metallurgical Industry Standard Research Institute, Daxu Steel Plant, Shougang Special Steel Plant, and Suixi Steel Plant. The main drafters of this standard are Wang Xinhong, Sun Huang, Ji Gui, Li Shuyong, and Zhang. The level grade of this standard is marked with GB1357:89[2 Winding
The wire shall be wound according to the provisions of Table 1. The surface of the sample after winding shall not produce cracks or fractures. Table 4
Wire winding period
R, C grade
5.3.3 Bending
Steel final convex diameter
Core diameter
Winding number
Steel wire with a diameter greater than 6.00mm shall be bent. The surface of the sample after bending shall not produce cracks or fractures. 5.4 Surface quality
The surface of the pin wire shall be smooth and shall not have cracks, bends, thorns, rust and other harmful defects. However, individual small defects with a depth not greater than half of the diameter tolerance and lubricating coating are allowed.
Test method
The inspection method, sampling quantity and test requirements of the steel wire inspection items shall comply with the provisions of the table. No.
7 Inspection rules
Test items
Surface quality
Tensile test
Torsion test
Wanti test
GB 435789
Sampling quantity for each batch
By disk, double ends
By disk, double hysteresis
Through disk, one end
10%, no less than
3One end
7.1 Inspection and acceptance shall be carried out by the supplier’s technical supervision department. 7.2 Batch rules
Test method
Use a scale to check the limit. If necessary, you can put more than 10 times the scale:
Test evaluation
The two ends are in different directions
Test requirements
The twisting number is the times of the wire diameter. When
The clamp is larger or smaller than 1D0
times of the wire diameter, the twisting number is proportional to the distance from the head to the head. In this case, it should be converted into the twisting number of 10D times the wire diameter.
R=10mm round
GB2976
Steel wires should be inspected and accepted in batches. Each batch should consist of wires of the same brand, strength level and diameter. 7.3 Retest
The retest of steel wire shall be carried out in accordance with the provisions of GB2103, with two tensile strength specimens and two torsion specimens. If one of the test results is unqualified, the unqualified item can be retested. At this time, a certain length should be removed from both ends of the steel wire coil and two specimens should be retested. The results must comply with the provisions of this standard. 8 Packaging, marking and quality certificate
The packaging, marking and quality certificate of steel wire shall comply with the provisions of GB 2103. The packaging type shall comply with the requirements of Class I and II. Other types shall be indicated in the contract.
Additional instructions:
This standard was drafted by the Metallurgical Industry Standard Research Institute, Daxu Steel Plant, Shougang Special Steel Plant, and Suixi Steel Plant. The main drafters of this standard are Wang Xinhong, Sun Huang, Ji Gui, Li Shuyong, and Zhang. The level grade of this standard is marked with GB1357:89[2 Winding
The wire shall be wound according to the provisions of Table 1. The surface of the sample after winding shall not produce cracks or fractures. Table 4
Wire winding period
R, C grade
5.3.3 Bending
Steel final convex diameter
Core diameter
Winding number
Steel wire with a diameter greater than 6.00mm shall be bent. The surface of the sample after bending shall not produce cracks or fractures. 5.4 Surface quality
The surface of the pin wire shall be smooth and shall not have cracks, bends, thorns, rust and other harmful defects. However, individual small defects with a depth not greater than half of the diameter tolerance and lubricating coating are allowed.
Test method
The inspection method, sampling quantity and test requirements of the steel wire inspection items shall comply with the provisions of the table. No.
7 Inspection rules
Test itemsbzxz.net
Surface quality
Tensile test
Torsion test
Wanti test
GB 435789
Sampling quantity for each batch
By disk, double ends
By disk, double hysteresis
Through disk, one end
10%, no less than
3One end
7.1 Inspection and acceptance shall be carried out by the supplier’s technical supervision department. 7.2 Batch rules
Test method
Use a scale to check the limit. If necessary, you can put more than 10 times the scale:
Test evaluation
The two ends are in different directions
Test requirements
The twisting number is the times of the wire diameter. When
The clamp is larger or smaller than 1D0
times of the wire diameter, the twisting number is proportional to the distance from the head to the head. In this case, it should be converted into the twisting number of 10D times the wire diameter.
R=10mm round
GB2976
Steel wires should be inspected and accepted in batches. Each batch should consist of wires of the same brand, strength level and diameter. 7.3 Retest
The retest of steel wire shall be carried out in accordance with the provisions of GB2103, with two tensile strength specimens and two torsion specimens. If one of the test results is unqualified, the unqualified item can be retested. At this time, a certain length should be removed from both ends of the steel wire coil and two specimens should be retested. The results must comply with the provisions of this standard. 8 Packaging, marking and quality certificate
The packaging, marking and quality certificate of steel wire shall comply with the provisions of GB 2103. The packaging type shall comply with the requirements of Class I and II. Other types shall be indicated in the contract.
Additional instructions:
This standard was drafted by the Metallurgical Industry Standard Research Institute, Daxu Steel Plant, Shougang Special Steel Plant, and Suixi Steel Plant. The main drafters of this standard are Wang Xinhong, Sun Huang, Ji Gui, Li Shuyong, and Zhang. The level grade of this standard is marked with GB1357:89[
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