牌號 | Z12CKNDWNb21-20-20 |
對應(yīng)標(biāo)準(zhǔn) | NF A 35-579-1991
閥門用鋼 Iron and steel. Stell for valves. Types. |
歸類 | 合金鋼 |
Reference heat treatment condition | Tensile strength at: N/mm2 | |||
500°C | 600°C | 700°C | 800°C | |
+QT | 245 | 235 | 216 | 157 |