... also available.2.Charateristics: a. Hot work steel with dry hardening,have upper hot intensity and rigidity, under middle ... pemperature,b. Have good tenacityc. Hot tirdness nature and definite wearable empty quench under lower ... Resistance for erosive attack 3.Application: hot squeezing mould, forging mould and embedded lump,, casting mould for aluminum, magnesium and copper, alloy ...