4. 合金結(jié)構(gòu)鋼(GB/T3077—1999)

(1)合金結(jié)構(gòu)鋼的化學(xué)成分(表2-95)表2-95合金結(jié)構(gòu)鋼的化學(xué)成分牌號化學(xué)成分/%碳硅錳鉻鉬20Mn230Mn235Mn240Mn245Mn250Mn220MnV0.17～0.240.27～0.340.32～0.390.37～0.440.42～0.490.47～0.550.17～0.240.17～0.370.17～0.370.17～0.370.17～0.370.17～0.370.17～0.370.17～0. ......（本文共 21576 字 ）     [閱讀本文] >>