hot work tool steel (H13/DIN1.2344/4Cr5MoSiV1),Forging material,Annealing,Hardness:180~255HBS,EAF or ESR black surface HOT WORK TOOL STEELH13/DIN1 ... .2344 hot work mould steel feature:1)Comparable steel:H13(USA,ASTM);DHA1(Datong ... after heat-treatment and so on.6)Application:Used for making hot squeezing mould,forging mould,embedded lump,like:alloy,cooper ...