France · AFNOR NF
54SiCr6
NF EN 10089
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.51 | 0.59 | ||
| Cr | 0.5 | 0.8 | ||
| Cu+Sn | Cu+Sn +/- 0 | Cu+Sn +/- 0 | ||
| Mn | 0.5 | 0.8 | ||
| P | 0.025 | |||
| S | 0.025 | |||
| Si | 1.2 | 1.6 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| bars, steel bars, quenched and tempered | ≤1300 | ≤1450 | ≤6 | ≤25 | ≤8 | |
| bars, HB | 钢棒 退火以获得球状碳化物 (+AC) 230；钢棒 软化退火 (+A) 248；钢棒 处理以改进剪切性 (+S) 280 |
Heat treatment
| Type | 1 |
|---|---|
| Heat-treatment curve | Hardness-Tempering |
| Heat-treatment curve | 淬透性 |
| Heat-treatment curve | TTT |