Uddeholm Impax Supreme

VERY GOOD POLISHING AND PHOTO ETCHING PROPERTIES

Uddeholm Impax Supreme is prehardened mould steel with very good polishing and photo etching properties. It is suitable for a wide range of injection moulds, blow moulds and extrusion dies for plastic. Uddeholm Impax Supreme is supplied at 290-330 HB. In east/south east asian countries served by Assab Uddeholm Impax Supreme is sold as AS 718 Supreme.
  • Prehardened gives following benefits:
    • No hardening risks
    • No hardening costs
    • Time saving, e.g. no waiting for heat treatment
    • Lower tool cost (e.g. no distortion to rectify)
    • Modifications easily carried out
  • Can be subsequently nitrided to increase surface wear resistance or locally flame hardened to reduce surface damage
  • Good polishing and photo-etching properties
  • Good machinability
  • High purity and good homogeneity
  • Uniform hardness

Uddeholm Impax Supreme

  • Corrosion resistance 20%
  • Wear resistance 30%
  • Polishability 50%
  • Toughness 90%
Chemical composition
Carbon .37 Silicon .3 Manganese 1.4
Chrome 2 Molybdenum .2 Nickel 1
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