Toolox® 44

The pre-hardened steel for extrusion dies and engineering components

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    General Product Description

    Toolox® 44 is a steel already heat treated to the final properties.Thus saving time, costs and risks associated with heat treatment.

    The very high strength is combined with a high and guaranteed toughness as well as an excellent fatigue resistence. Making Toolox® 44 the ideal choice for the most demanding engineering and mould and die applications.

    Toolox® 44 can be surface hardened with methods like nitriding, laser and induction. Giving the possibilities to even further improve the performance.

    Dimension Range

    Toolox® 44 is available as plates in thicknesses between 6.0 - 130.0 mm. Other dimensions can be available on request.

    Mechanical Properties

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      Hardness 1)
      Yield strength Rp0.2
      (min MPa)
      Tensile strength Rm
      (min MPa)
      Elongation A5
      (min %)
      6.0 - 130.0 410 - 475 1150 1300 8
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        1) Hardness is measured, according to EN ISO 6506-1, on a milled surface 0.5 - 2 mm below the plate surface.

        Impact Properties

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          Min impact energy for transversal testing,
          Charpy V 10x10 mm test specimen 1)
          6.0 - 130.0 18 J / 20 °C
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            1) Unless otherwise agreed, transverse impact testing according to EN 10025-6 option 30 will apply. For thicknesses between 6 - 11.9 mm, sub-size Charpy V-specimens are used. The specified minimum value is then proportrional to the cross-sectional area of the specimen compared to a full-size specimen (10 x 10 mm).




            Ultrasonic testing

            Ultrasonic inspection is carried out according to : EN 10 160 with extra demands according to specification SSAB V6.


            More details are given in SSAB’s brochure Toolox® Guarantees and on


            Tolerances according to Toolox® Thickness Guarantee.

            Toolox® Guarantees meets the requirements of EN 10029 Class C but offers more narrow tolerances.

            Length and Width

            Tolerances according to EN 10029.


            Tolerances are according to Toolox® Flatness Guarantees, which are more restrictive than EN 10029 Class N (steel type L).

            Surface Properties

            According to EN 10163-2 Class B Subclass 3.

            Delivery Conditions

            Quenched and Tempered at a minimum temperature of 590 °C.

            On delivery from SSAB the plates meet the following specifications:

            • Free from mill scale
            • Not repair welded

            Delivery requirements can be found in SSAB’s brochure Toolox® Guarantees or at

            Recommendations and instructions

            pdf 384 Kb
            Toolox® in engineering applications
            pdf 783 Kb
            Machining recommendations for Toolox®

            Used for

            • Tooling & Engineering
            • High temperatures (up to 590°C)

            Available standard

            • EN 10029

            High-strength engineering tool steel

            The new generation of tool steel.