... .thinkness:0.3-3.0 2.width:25mm-380mm Hot rolled steel 1.Thickness0.3-3.0mm2.Width25-380mm3.QualityGood quality5 ... .FinishingCold rolled & annealed6.Material50# 60# 70# 65mn 50GrVa T8A T10A 60Si2Mn Sk4 ... used in the system saw, clay tablets, putty knives, blades, motor , deep red, automobile clutches, rolling doors, clocks spring, lock, footwear ...