牌号 | 20NiCrMo2 |
對應标準 | UNI 8550-1984
表面硬化用鍛造非合金和合金鋼成品—質量、試驗要求 Specification unalloyed and alloyed steel finished products, open die and drop forged, for case hardening - Qualities, requirements and tests |
歸類 | 合金鋼 |
标簽 | 合金鋼 |