Uddeholm Impax Supreme
VERY GOOD POLISHING AND PHOTO ETCHING PROPERTIES
Uddeholm Impax Supreme is a prehardened tool steel with very good through hardness properties, combined with excellent toughness and easy of machining in its harden state. It is suitable for a wide range of hot work applications in the support or holder block areas. 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 saver, e.g. no waiting for heat treatment, direct to machining operations
- Lower tool cost (e.g. no distortion to rectify)
- Modifications easily carried out
If the application allows it can be subsequently nitrided to increase surface wear resistance or locally flame hardened to reduce surface damage.
- Good surface finishes possible as high polishability
- Good machinability
- Good weldability
- High purity and good homogeneity
- Uniform hardness
- Machinability 50%
- Wear resistance 30%
- Corrosion resistance 60%
- Toughness 90%
Chemical composition
| C | 0.37 | Si | 0.30 | Mn | 1.40 |
| Cr | 2.00 | Mo | 0.20 | Ni | 1.00 |
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