China · GB
50CrVA
GB/T 8162:1999 — Seamless steel tubes for structural purposes
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.47 | 0.54 | ||
| Cr | 0.8 | 1.1 | ||
| Cu | 0.25 | |||
| Mn | 0.5 | 0.8 | ||
| Mo | 0.1 | |||
| Ni | 0.3 | |||
| P | 0.025 | |||
| S | 0.025 | |||
| 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 |
|---|---|---|---|---|---|---|
| Seamless tubes, quenched and tempered | ≥1130 | ≥1275 | ≥10 | |||
| Seamless tubes, annealed, >= 5 mm | HB ≤255 | |||||
| cold drawn steel tubes, heat treated | ≥1130 | ≥1275 | ≥10 | HB ≤255 | ||
| hot rolled steel tubes, hot rolled or heat treated | ≥1130 | ≥1275 | ≥10 | HB ≤255 |