France · AFNOR NF
18 MF 5
NF A37-401
Chemical composition
wt% · log scale- min – max range
- typical value
Mechanical properties
value range by conditionChemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.16 | 0.22 | ||
| Mn | 1.1 | 1.5 | ||
| P | 0.04 | |||
| S | 0.18 | 0.25 | ||
| Si | 0.1 | 0.4 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| bars, round bars | ≤275 | ≤430 | ≤25 |