France · AFNOR NF
TS Z 6 CNT 18-10
NF A49-247
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.08 | |||
| Cr | 17 | 20 | ||
| Cu | 1 | |||
| Mn | 2 | |||
| Ni | 9 | 12 | ||
| P | 0.04 | |||
| S | 0.03 | |||
| Si | 1 | |||
| Ti | 0.6 | 5 x C% (min.) | 5 x C% (min.) |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| steel tubes, welded steel tube, Heat treated | ≤220 | ≤530 | ≤35 | |||
| steel tubes, HR | 焊接钢管 Heat treated 90 |