... application scope: Cold die, is to introduce A2 steel, in A kind of empty steel quenching is the most versatile of A kind. Apply to both wear ... production, small cold punch die, filling mold, forming dies and the punch, etc.2chemical composition:C :0.95~1.05Si:≤0 ... preservation 5~15min,air cooling,200±6°C,tempering.5condition of delivery:Steel to annealing state delivery x100crmov5 alloy tool steel ...