United States · SAE
51420
SAE AMS 5621F:2010 — SAE AMS 5621F
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| Al | 0.05 | |||
| C | 0.3 | 0.4 | ||
| Cr | 12 | 14 | ||
| Cu | 0.5 | |||
| Mn | 1 | |||
| Mo | 0.5 | |||
| Ni | 0.5 | |||
| P | 0.04 | |||
| S | 0.03 | |||
| Si | 1 | |||
| Sn | 0.05 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| Wires, cold drawn annealed | ≤793 | |||||
| bars, HR | 锻件 处理之后 50 | |||||
| bars, annealed | HB ≤241 |
Heat treatment
| Type | 1 |
|---|---|
| Heat-treatment curve | CCT |