O1 TOOL STEEL

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  • Description

    O-1 is an oil-hardening tool steel which may be hardened from fairly low temperatures with little size change. O-1 combines deep-hardening qualities with a fine-grained structure, affording good initial production runs, and good continued production after grinding.

  • Identification | Specifications

    UNS # T31501
    AISI # Type O1

    ASTM A681

  • Properties

    Physical
    Specific Gravity - 7.83
    Density - 0.283 lb/in3

  • Processes

    Standard
    Hot Rolled
    Thermal Condition Cycled
    Flattened
    Cut Ends

  • Chemistry

    Carbon 0.85 – 1.00 %

    Chromium 0.40 –0.70 %

    Manganese 1.00 – 1.40 %

    Phosphorus 0.30 % Max

    Silicon 0.10 – 0.50 %

    Sulfur 0.03 %

    Max Tungsten 0.40 – 0.60 %

    Vanadium 0.30 % Max