... than Cr12MoV, the organization and grain fineness number of steel further thining, which advancing the hardening, strength and toughness ... to produce high-wear resistence large and complcated cold forming mould. For example, cold cutting scissors, comb dies, wire ... -drawing die, thread rolling die, and other cold-punching mould and plunger chip which request high wear resisitence. d2 mould steel