France · AFNOR NF
HDT780C
NF EN 10346
Chemical composition
wt% · log scale- min – max range
- typical value
Mechanical properties
value range by conditionChemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| Al | 2 | Al total | ||
| B | 0.005 | |||
| C | 0.18 | |||
| Cr+Mo | 1 | |||
| Mn | 2.2 | |||
| Nb+Ti | 0.15 | |||
| P | 0.08 | |||
| S | 0.015 | |||
| Si | 0.8 | |||
| V | 0.2 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| hot rolled | 680–830 | ≥780 | ≥10 Lo=80mm |