| SCM420 JIS合金結(jié)構(gòu)鋼 (鉻鉬鋼) 主要化學(xué)成份%: C: 0.18-0.23 SI: 0.15-0.35 MN: 0.60-0.85 P: <0.030 S: <0.030 CR: 0.90-1.20 NI: <0.25 MO:0.15-0.30 CU: <0.30 鎳鉻鉬合金結(jié)構(gòu)鋼 SNCM220 SNCM240 SNCM415 SNCM420 SNCM431 SNCM439 SNCM447 SNCM616 SNCM625 SNCM630 SNCM815等 常用日本鉻鋼牌號(hào): SCR415 SCR420 SCR430 SCR435 SCR440 SRC445等 常用鉻鉬合金結(jié)構(gòu)鋼:SCM415 SCM418 SCM420 SCM430 SCM435 SCM440等 |
