SSAB M53

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General Product Description

SSAB M53 is a micro-alloyed steel grade for quench- and press hardening, developed to suit several applications and segments, with agriculture as an example. Fine-grain micro-structure prevents 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. Economical and environmental friendly alternative for carburized and triple layered materials.

Dimension Range

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    Delivery form Thickness
    (mmin)
    Width
    (mmin)
    Max. length (mmin)
    Hot rolled sheet 4.0 - 8.0 1)0.16 - 0.31 1) 1000 - 180039.37 - 70.87 13000511.81
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      1) Please check thickness/width combinations available.

      Mechanical Properties

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        Product type Typical Elongation A (%),
        not guaranteed
        Typical Hardness
        (HRC), not guaranteed
        As rolled 14 15 - 32
        Polymer quenched 60 - 63
        Polymer quenched & tempered (175° C) 59 - 61
        Polymer quenched & tempered (425° C) 8.5 47
        Polymer quenched & tempered (550° C) 11.5 42
        Oil quenched 59 - 61
        Oil quenched and tempered (175° C) 59 - 61
        Oil quenched and tempered (425° C) 8.5 48
        Oil quenched and tempered (550° C) 11.5 43
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          Examples of cooling media used for evaluating typical mechanical properties:

          PAG polymer 10%, no agitation, T ≤ 30 °C.

          Fast cooling rate quenching oil, T ≤ 35 °C.

          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
            Polymer quenched 9 J / 20.0 °C
            Polymer quenched & tempered (175° C) 18 J / 20.0 °C
            Polymer quenched & tempered (425° C) 26 J / 20.0 °C
            Polymer quenched & tempered (550° C) 41 J / 20.0 °C
            Oil quenched 9 J / 20.0 °C
            Oil quenched and tempered (175° C) 18 J / 20.0 °C
            Oil quenched and tempered (425° C) 24 J / 20.0 °C
            Oil quenched and tempered (550° C) 40 J / 20.0 °C
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            Comparison

              Product condition
              As rolled
              Longitudinal test, typical impact energy,
              Charpy V 10x10 mm test specimen 1)
              Product condition
              Polymer quenched
              Longitudinal test, typical impact energy,
              Charpy V 10x10 mm test specimen 1)
              9 J / 20.0 °C
              Product condition
              Polymer quenched & tempered (175° C)
              Longitudinal test, typical impact energy,
              Charpy V 10x10 mm test specimen 1)
              18 J / 20.0 °C
              Product condition
              Polymer quenched & tempered (425° C)
              Longitudinal test, typical impact energy,
              Charpy V 10x10 mm test specimen 1)
              26 J / 20.0 °C
              Product condition
              Polymer quenched & tempered (550° C)
              Longitudinal test, typical impact energy,
              Charpy V 10x10 mm test specimen 1)
              41 J / 20.0 °C
              Product condition
              Oil quenched
              Longitudinal test, typical impact energy,
              Charpy V 10x10 mm test specimen 1)
              9 J / 20.0 °C
              Product condition
              Oil quenched and tempered (175° C)
              Longitudinal test, typical impact energy,
              Charpy V 10x10 mm test specimen 1)
              18 J / 20.0 °C
              Product condition
              Oil quenched and tempered (425° C)
              Longitudinal test, typical impact energy,
              Charpy V 10x10 mm test specimen 1)
              24 J / 20.0 °C
              Product condition
              Oil quenched and tempered (550° C)
              Longitudinal test, typical impact energy,
              Charpy V 10x10 mm test specimen 1)
              40 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 proportrional 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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                Delivery form C
                (%)
                Si
                (%)
                Mn
                (%)
                S
                (max %)
                P
                (max %)
                Cr
                (max %)
                Hot rolled strip 0.49 - 0.57 0.10 - 0.35 0.15 - 0.50 0.010 0.020 0.60
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                  SSAB M53 is micro-alloyed with Nb, Ti and V.

                  Carbon Equivalent CET(CEV)

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                    Delivery form Hot rolled strip
                    Typical CET (%) 0.61
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                      Delivery form
                      Typical CET (%)
                      Hot rolled strip
                      0.61
                      CET and CEV formula

                      Tolerances

                      SSAB M53 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.

                      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 sheet are delivered in as rolled (+AR) condition.

                      Surface Condition

                      Hot rolled strip products are available in non-pickled.

                      Pickled dry or pickled & oiled condition available upon request.

                      Fabrication and Other Recommendations

                      Cutting is recommended by laser or plasma, flame cutting is not advised.

                      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