D2 tool steel, 1.2379 die steel Annealing Hardness: HB 225 Max Heat treatment:Quenching1000-1050 Gas ... Cooler Temperature 500 Detailed Product Description D2 tool steel, 1.2379 die steel Annealing Hardness: HB 225 Max used for cold ... ,Press,Roll,Pressing Dies,Punch,Cutter,ShearB D2 tool steel, 1.2379 die steel 1)Annealing Hardness: HB 225 Max 2)Heat ...