ArcelorMittal Industeel - Superplast@SP400
High performance plastic mould steel

Delivered Hardness
Pre-hardened to 340-380 HB

Chemical Content(%):(Reference Only)

C Si Mn Cr Ni Mo
0.25 / 1.15 2.0 0.75 0.60

Comparable Standard
WNr1.2738 modified


  • 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.


 LKM Steel Rainbow Chart