... ,SCM415,SCM435 Forged square bars SCM415Similar grade:20CrMo,SCM420,Size:150 x 150 to 600 x 600Chemical Composition:C:0.14/0.18; Mn ... .Straightness:Max 4mm/M.For Both end cutting.Other Steel Grade:Carbon Steel:S20C,S26C,S35C,S45C,S50C,S55C,S60C;Alloy ...