Supreme steel industries is one of the leading manufacturers of steel and steel products. Cold Work Tool Steel Specifications: 1.Cold work tool steel Cr12 D3DIN 1.2080 2. D3:Hot rolled,EAF or ESR 3.black, Annealed Hardness: HBS=217~269 Features 1).Tool Steel Grade:Cold work tool steel plateround barflat bar (Cr12 D3DIN 1.2080) 2).Tool Steel Specification(or as customer's request): Flat bar:Thickness:202530...300mm,Width:205210215...610mm,Length:2500~4000mm Round