Uddeholm Impax Supreme


    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
    • Sustainable tool steel: 96,44% recycled content

    Uddeholm Impax Supreme

    • Machinability 50%
    • Wear resistance 30%
    • Corrosion resistance 60%
    • Toughness 90%
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    Chemical composition
    C 0.37 Si 0.30 Mn 1.40
    Cr 2.00 Mo 0.20 Ni 1.00
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