ArcelorMittal Industeel - Superplast@SP350
High performance plastic mould steel

Delivered Hardness
Pre-hardened to 320-360 HB

Chemical Content(%):(Reference Only)

C Si Mn Cr Ni Mo
0.26 / 1.5 1.6 0.3 0.65

Comparable Standard
WNr1.2738 modified HH


  • 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, fenders,television panels, bottle crates, etc.


 LKM Steel Rainbow Chart