France · AFNOR NF
TU 10 CD 5-05
NF A49-215
Chemical composition
wt% · log scale- min – max range
- typical value
Mechanical properties
value range by conditionChemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.17 | |||
| Cr | 0.9 | 1.6 | ||
| Cu | 0.25 | |||
| Mn | 0.2 | 0.7 | ||
| Mo | 0.41 | 0.69 | ||
| Ni | 0.3 | |||
| P | 0.035 | |||
| S | 0.035 | |||
| Si | 0.45 | 1.05 | ||
| Sn | 0.03 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| seamless steel tube, steel tubes, heat treated | ≤225；≤325 | ≤440；≤490 | ≤22；≤20 | |||
| seamless steel tube, HR | 钢管 热处理 (HT2) ≤93；钢管 热处理 (HT1) ≤90 |