Uddeholm QRO 90 HT


    Uddeholm QRO 90 HT is a hot rolled, pre-machined and pre-hardened QRO 90 Supreme material. The properties of Uddeholm QRO 90 Supreme in combination of pre-machined, pre-hardened round dimension makes the product extremely robust for core pins and other thermal stability inserts for high pressure die casting. Reduce maintenance and downtime costs combined with increased productivity due to the reduced likelihood of premature failures. Excellent machinability in pre-hardened condition ensures advantages in both tool making and tool maintenance.

    • Shorter lead times
    • High hot yield strength
    • Great hot creep strength
    • Extremely high temper back resistance
    • Uddeholm QRO 90 HT can be surface treated for improved wear and soldering resistance

    Uddeholm QRO 90 HT

    • 55%
    • 60%
    • 80%
    • 35%

    Reference Grade Hot Work (H13)

    • Hot wear resistance 40%
    • Plastic deformation resistance 40%
    • Heat checking resistance 40%
    • Premature cracking resistance 35%
    Chemical composition
    Carbon 0.38 Silicon 0.30 Manganese 0.80
    Chromium 2.60 Molybdenum 2.30 Vanadium 0.90
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