Uddeholm UK

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

  • Hot wear resistance 0%
  • Plastic deformation resistance 0%
  • Heat checking resistance 0%
  • Premature cracking resistance 0%

Reference Grade Hot Work (H13)

  • Hot wear resistance 40%
  • Plastic deformation resistance 40%
  • Heat checking resistance 40%
  • Premature cracking resistance 35%
Chemical composition
Carbon .37 Silicon .3 Manganese 1.4
Chrome 2 Molybdenum .2 Nickel 1
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