Uddeholm UK

Uddeholm Impax Supreme


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. <ul> <li>Prehardened gives following benefits: <ul> <li>No hardening risks</li> <li>No hardening costs</li> <li>Time saving, e.g. no waiting for heat treatment</li> <li>Lower tool cost (e.g. no distortion to rectify)</li> <li>Modifications easily carried out</li> </ul> </li> <li>Can be subsequently nitrided to increase surface wear resistance or locally flame hardened to reduce surface damage</li> </ul>
  • 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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