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
