China · GB
50CrVA
GB/T 1222:1984 — Spring steels
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.46 | 0.54 | ||
| Cr | 0.8 | 1.1 | ||
| Cu | 0.25 | |||
| Mn | 0.5 | 0.8 | ||
| Ni | 0.35 | |||
| P | 0.03 | |||
| S | 0.03 | |||
| Si | 0.17 | 0.37 | ||
| V | 0.1 | 0.2 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| cold drawnround bars, heat treated | ≥1270 | ≥10 | ≥40 | HB ≤321 | ||
| hot-rolled section/bars, hot rolled or heat treated | ≥1270 | ≥10 | ≥40 | HB ≤321 |