HUBEI FUXING NEW MATERIAL TECHNOLOGY CO.,LTD
HUBEI FUXING SCIENCE AND TECHNOLOGY CO.,LTD
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PRODUCTS DESCRIPTION:
1. Applied grade: 60#-65#; 72A
2. Specification: 0.45mm-4.0mm.
3 Aplication: Applicable to industries such as automobile, machinery, spring mattress and sports requisites,
pecially fit to windings of extension spring, compressed spring, torsion spring, clamp,
be protected spring and serpentine spring.
4 Executive standard: Grade B, C, and D of GB/T4357-89.
Features:
Adopting high qwuality spring steel materials, the reel weight of finished products is between 20kg to 150kg.
They have higher strength, good plasticity, toughness and resistance to corrosion.
They can be produced to be of different types that are easy to rinse, good in surface conductivity an d fit to electroplating spring according to the customers' requirement.
TECHNOLOGY DETAIL
Tensile strength table of steel wire(Mpa)
| Group | Tensile strength |
| A1 | 1180-1380 |
| A2 | 1380-1580 |
| A3 | 1580-1780 |
| A4 | 1780-1980 |
| A5 | 1980-2180 |
| A6 | 2180-2380 |
Diameter tolerance of steel wire
| Diameter of steel wire(mm) | Grade of allowable tolerance | ||
| h10 | h11 | h12 | |
| Allowable tolerance | |||
| >0.30-0.60 | ±0.01 | ±0.02 | ±0.03 |
| >0.60-1.00 | ±0.01 | ±0.02 | ±0.03 |
| >1.00-3.00 | ±0.02 | ±0.03 | ±0.05 |
| >3.00-5.00 | ±0.02 | ±0.03 | ±0.05 |