ArcelorMittal - Steel Chart
ArcelorMittal Industeel Superplast mould steels
Material Grade Hardness Characteristics Applications
SP300 Prehardened to HB280-330 Good machinability;consistent texturability and polishability improved by very low sulphur content and hardness homogeneity; reliable repair weldabilty and high thermal conductivity. Plastic injection mould cores and cavities with high requirements in homogeneity, surface finish, machining. Large size moulds for bumpers, dashboards, television panels, bottle crates, etc.
SP350 Prehardened to HB320-360 Good machinability;consistent texturability and polishability improved by very low sulphur content and hardness homogeneity; reliable repair weldability and high thermal conductivity. Plastic injection mould cores and cavities with high requirements in homogeneity, surface finish, machining. Large size moulds for bumpers, dashboards, fenders,television panels, bottle crates, etc.
SP400 Prehardened to HB340-380 40 HRC pre-hardened standard grade designed for the plastic mold industry.High wear resistance , high toughness, good polishability;reliable repair weldability and high thermal conductivity. Plastic injection or compression mould cores and cavities with high requirements in homogeneity, surface finish, machining. Large size moulds with high quality finish,compression dies under high mechanical and thermal stresses.