Hot working die steel:
GB:4Cr5MoSiV1（USA Standard: H13，Din Standard:1.2344, Japan Standard: SKD61）
Features: High thermal strength and hardness, good toughness at medium temperature, thermal fatigue performance and certain wear resistance, low temperature air quenching deformation is small, small probability of oxide skin, can resist the erosion of molten aluminum.
Application: Widely used in manufacturing hot extrusion die, mandrel, hammer die of forging hammer, forging press die, precision forging die.
Other steel grade：5CrNiMoV，5CrMnMo，8Cr3，H10，H11，3Cr2W8V（H21）