Hot Work Die SteelMa

H12 is a chromium-molybdenum-tungsten hot-work tool steel designated under AISI and specified in ASTM A681 as UNS T20812. It is a general-purpose hot-work grade containing approximately 5 % chromium with additions of molybdenum, tungsten and vanadium, used for dies and tools requiring toughness and resistance to heat checking.