Toolox 44 Steel

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    TOOLOX 44

    Toolox 44 is a new quenched and tempered steel designed to have high impact resistance and low residual stresses, and therefore good dimensional stability. Despite a hardness of 44 HRC, the new steel is easily machined. Toolox 44 Steel is particularly suitable for manufacturing plastic molds because it can be polished and etched with very good results.

    Fields of application for Toolox 44 Steel include:

    • Machine components
    • Wear components
    • Plastic molds
    • Rubber molds
    • Press forming
    • Die cast dies
    • Forging dies
    • Coreboxes
    • Permanent molds

    Features

    Despite hardness of nominal 45 HRC, Toolox steel is easy to machine.

    Particularly suitable for manufacturing plastic molds because it can be polished and etched with very good results.

    Great for guide rails, bending tools, etc. when high stability materials are required.

    Specifications

    HardnessHardness range 41 – 47 HRC
    Impact toughnessTest temperature °F 68
    Impact energy, Charpy-V-test for plate, direction
    Guaranteed minimum Ft. lbs. 14
    MillingAt cutting speed of 140m/mm, feed 0.15mm and 10min effective machining time using Sandvik Coromil 200 and inserts GC 1025
    We guarantee maximum edge wear of 0.3mm
    EtchingToolox 44 fulfills the etching requirements of NADCA 207-2003
    DimensionsToolox 44 is supplied as plate in thickness between .200″ – 5 1/8″
    Heat treatmentToolox 44 is not intended for further heat treatments. If Toolox 44 is heated above 590°C, no guarantees for the properties of the steel can be given.
    Nitriding/coatingBelow temperature <590°C / 1094°F

    Technical Information (Typical Values)

    CSiMnS, maxCrNiMoV
    0.31%0.60%0.90%40 ppm1.35%0.70%0.80%0.145%
    Yield Strength PSI
    at +20°C 181,300
    at +200°C 166,340
    at +300°C 162,400
    at +400°C 150,840
    Inclusion Size (equiv. diam) 6μm
    Area faction 0.015%
    Aspect ratio 1.2
    +20°C +200°C
    Tensile Strength, PSI 210,300 200,150
    Yield Strength, PSI 188,500 174,045
    Elongation, A5 [%] 13 10
    Impact Toughness, Typical 22 ft. lbs. 22 ft. lbs
    Hardness [HRC] 45 45
    Thermal Expansion Coefficient Inch/Inch F +200°C
    68°F -> 750°F 7.5 20

    Machining

    Toolox 44 Steel can be machined on conventional machines. It is important that sharp tools are used with a positive cutting angle and that vibration is avoided. Use the following recommendations as guidelines and the starting point for your own evaluation of best practice.

    Recommended preheat temperature when gas cutting and welding Minimum 250°C

    Recommended stress relief annealing (after slow cooling to room temperature) after gas cutting and welding 580°C

    Further Reading on Toolox 44 Steel and Its Applications