(Low-alloyed steels for machine structural use)
39가지 강종 중 하나인 SCM440 강재이며
JIS 열처리편, G4053 機械構造用 合金鋼 鋼材
(Low-alloyed steels for machine structural use)
(Low-alloyed steels for machine structural use)
39가지 강종 중 하나인 SCM440 강재이며
JIS 열처리편, G4053 機械構造用 合金鋼 鋼材
(Low-alloyed steels for machine structural use)