China · GB
ML30
GB/T 5953.1:2009 — Steel wire for cold heading and cold forging. Part 1:Intended for heat treatment
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| steel wire 12mm < d ≤ 25mm, cold drawn+spheroidizing annealed+ | 450–600 | ≥50 | HR ≤89 | |||
| steel wire 6mm < d ≤ 12mm, cold drawn+spheroidizing annealed+ | 470–650 | ≥55 | ||||
| steel wire d ≤ 6mm, cold drawn+spheroidizing annealed+ | 490–690 | ≥55 | ||||
| steel wire, cold drawn+spheroidizing annealed | 380–560 | ≥50 | HR ≤86 |