France · AFNOR NF
38 MB 5
NF A35-564
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| Al | 0.02 | |||
| B | 0.0008 | 0.005 | ||
| C | 0.34 | 0.4 | ||
| Cr | 0.4 | 0.6 | ||
| Cu | 0.3 | |||
| Fe | Bal | Bal | ||
| Mn | 1.1 | 1.4 | ||
| P | 0.03 | |||
| S | 0.03 | |||
| Si | 0.35 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| bars, steel bars, wire | 560.00 | |||||
| bars, HB, wire | 钢棒 212.00 | |||||
| bars, HB, wire, annealed | 钢棒 153 217.00 |
Heat treatment
| Type | 1 |
|---|---|
| Heat-treatment curve | Hardness-Tempering |
| Heat-treatment curve | 淬透性 |
| Heat-treatment curve | CCT |