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SSAB M43

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    General Product Description

    SSAB M43 is a micro-alloyed steel grade for quench hardening. The self-tempering properties prevent formation of hardening cracks. The degree of hardness and toughness that can be achieved after heat-treatment will provide end products with a wear- and shock resistance ratio that ensures longer lifetime.

    Dimension Range

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      Delivery form Thickness
      (mmin)      		 Width
      (mmin)      		 Length
      (mmin)
      Hot rolled sheet 3.0 - 12.0 1)0.12 - 0.472 1) 1000 - 180039.37 - 70.87 - 13000- 511.81
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        1) Please check thickness/width combinations available.

        Mechanical Properties (typical values)

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          Product type Typical yield strength Rp0.2 (MPa) Typical tensile strength Rm (MPa) Typical Elongation A (%),
          not guaranteed          		 Typical Hardness
          (HRC), not guaranteed
          As rolled 440 660 16 18
          Water quenched — 2200 — 58
          Water quenched and tempered (175° C) — — — 56
          Oil quenched — 1750 — 52
          Oil quenched and tempered (175° C) — — — 51
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            Bending radius

            For further information, please consult your local SSAB contact person or contact SSAB’s Technical Customer Service.

            Material Testing

            A material test certificate Type 2.2 according to EN 10204 (chemical composition) is part of the delivery. A material test certificate according Type 3.1 according to EN 10204 (mechanical properties) can be provided by special agreement.

            Impact Properties (typical values)

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              Product condition Longitudinal test, typical impact energy,
              Charpy V 10x10 mm test specimen 1)
              As rolled / 20.0 °C
              Water quenched 25 J / 20.0 °C
              Water quenched and tempered (175° C) 37 J / 20.0 °C
              Oil quenched 38 J / 20.0 °C
              Oil quenched and tempered (175° C) 39 J / 20.0 °C
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                Product condition
                As rolled
                Longitudinal test, typical impact energy,
                Charpy V 10x10 mm test specimen 1)
                / 20.0 °C
                Product condition
                Water quenched
                Longitudinal test, typical impact energy,
                Charpy V 10x10 mm test specimen 1)
                25 J / 20.0 °C
                Product condition
                Water quenched and tempered (175° C)
                Longitudinal test, typical impact energy,
                Charpy V 10x10 mm test specimen 1)
                37 J / 20.0 °C
                Product condition
                Oil quenched
                Longitudinal test, typical impact energy,
                Charpy V 10x10 mm test specimen 1)
                38 J / 20.0 °C
                Product condition
                Oil quenched and tempered (175° C)
                Longitudinal test, typical impact energy,
                Charpy V 10x10 mm test specimen 1)
                39 J / 20.0 °C

                1) For thicknesses between 6 - 11.9 mm, sub-size Charpy V-specimens are used. The specified typical value is then proportional to the cross-sectional area of the specimen compared to a full-size specimen (10 x 10 mm).

                Chemical Composition (ladle analysis)

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                  C
                  (%)                  		 Si
                  (%)                  		 Mn
                  (%)                  		 S
                  (max %)                  		 P
                  (max %)                  		 Cr
                  (max %)
                  0.39 - 0.47 0.13 - 0.23 0.20 - 0.30 0.010 0.020 0.10
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                    SSAB M43 is micro-alloyed with Nb, Ti and V.

                    Carbon Equivalent

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                      Delivery form Hot rolled strip
                      Typical CET (%) 0.53
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                        Delivery form
                        Typical CET (%)
                        Hot rolled strip
                        0.53
                        CET and CEV formula

                        Tolerances

                        SSAB M43 is delivered with SSAB tolerances, which meet and exceed the requirements in EN 10051. Tighter tolerances are available upon request

                        Thickness

                        2/3 of EN 10051.

                        Width

                        Hot rolled sheet: -0/+20mm (trimmed edges -0/+2 mm).

                        Length

                        -0/+20mm (only available for cut to length sheets).

                        Shape

                        Tolerances according to EN 10051.

                        Flatness

                        ≤ 6 mm/1 m ruler deviation (only valid for cut to length sheets).

                        Surface Properties

                        According to EN 10163-2 Class A, Subclass 3.

                        Delivery Conditions

                        Hot rolled sheets are delivered in as rolled (+AR) condition.

                        Surface Condition

                        Hot rolled sheets are available in non-pickled, pickled dry or pickled & oiled condition.

                        Fabrication and Other Recommendations

                        Cutting is recommended by laser or plasma.

                        The material is well-suited for welding in as rolled condition, please contact tech support for guidance.

                        For information concerning fabrication, see SSAB´s brochures on www.ssab.com or consult Tech Support.

                        Appropriate health and safety precautions must be taken when bending, welding, cutting, grinding or otherwise working on the products.

                        Contact Information

                        www.ssab.com/contact