France · AFNOR NF
Z 12 CN 26-21
NF A35-578 — Creep resisting steels, nickel and cobalt alloys
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| Al | 0.5 | |||
| C | 0.12 | |||
| Cr | 25.5 | 26.5 | ||
| Mn | 2 | |||
| Mo | 0.5 | |||
| Ni | 19.5 | 21.5 | ||
| P | 0.035 | |||
| S | 0.015 | |||
| Si | 0.75 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| bars, heavy plate, steel bars, round bars | 钢管 厚板 | |||||
| bars, steel tubes, heavy plate, steel bars | 圆钢 | 圆钢 | 圆钢 | 圆钢 |