牌號 | Z20CN21-12Az |
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 | |
+Q | - | 120 | 50 | 20 |