France · AFNOR NF
XC 60
NF A37-502
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.57 | 0.65 | ||
| Mn | 0.4 | 0.7 | ||
| P | 0.035 | |||
| S | 0.025 | |||
| Si | 0.15 | 0.35 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| steel strip, tempered | 510–630；620–740；720–840；840–960 | |||||
| steel strip, annealed | ≤570 | ≥21 Lo= 50 mm | HR ≤87 Hardened 1038℃ |