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SSAB Domex® 420MC

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    General Product Description

    SSAB Domex 420MC meets or exceeds the requirements of S420MC in EN 10149-2. Upon agreement, it can be delivered as dual certified. This dual certification will enable producers of steel structures, in accordance with EN 1090, to use SSAB Domex 420MC in their CE-marked final component or structure.

    Dimension Range

    SSAB Domex 420MC is available in thicknesses of 1.80-15.00 mm and widths up to 1860 mm as coils, slit coils and as cut to length in lengths up to 16 meters.

    Mechanical Properties

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      Thickness
      (mmin)      		 Yield strength ReH
      (min MPa)      		 Tensile strength Rm
      (MPa)      		 Elongation A80 1)
      (min %)      		 Elongation A5 2)
      (min %)      		 Min. inner bending radius for a 90° bend
      (x t)
      1.80 - 3.000.0709 - 0.118 420 480 - 620 16 20 0.4
      3.01 - 6.000.119 - 0.236 420 480 - 620 — 20 0.5
      6.01 - 15.000.237 - 0.5906 420 480 - 620 — 20 0.8
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      Comparison

        The mechanical properties are tested in the longitudinal direction.

        Bending properties for both longitudinal and transversal direction.

        1) A80 value applies for thicknesses < 3.00 mm.

        2) A5 value applies for thicknesses ≥ 3.00 mm.

        Impact Properties

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          Product Min. impact energy for longitudinal testing,
          Charpy V 10x10 mm test specimens
          SSAB Domex 420MC B —
          SSAB Domex 420MC D 40 J / -20 °C
          SSAB Domex 420MC E 27 J / -40 °C
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          Comparison

            Product
            SSAB Domex 420MC B
            Min. impact energy for longitudinal testing,
            Charpy V 10x10 mm test specimens
            —
            Product
            SSAB Domex 420MC D
            Min. impact energy for longitudinal testing,
            Charpy V 10x10 mm test specimens
            40 J / -20 °C
            Product
            SSAB Domex 420MC E
            Min. impact energy for longitudinal testing,
            Charpy V 10x10 mm test specimens
            27 J / -40 °C
            Impact testing according to EN ISO 148-1 is performed on thicknesses ≥ 6mm. The specified minimum value corresponds to a full-size specimen.

            Chemical Composition (ladle analysis)

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              C
              (max %)              		 Si
              (max %)              		 Mn
              (max %)              		 P
              (max %)              		 S
              (max %)              		 Al
              (min %)              		 Nb
              (max %)              		 V
              (max %)              		 Ti
              (max %)
              0.10 0.03 1) 1.50 0.025 0.010 0.015 0.09 2) 0.20 2) 0.15 2)
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              Comparison

                The steel is grain refined.

                1) Meets the requirements of category A (thin coatings) for hot-dip zinc-coating in EN 10149-2. Category B for thick coatings is available on request (Si 0.15-0.21%).

                2) The sum of Nb, V and Ti is max 0.22%.

                Carbon Equivalent

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                  Thickness (mmin) 1.80 - 15.000.0709 - 0.5906
                  Typical CEV (%) 0.25
                  Typical CET (%) 0.18
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                    Thickness (mmin)
                    Typical CEV (%)
                    1.80 - 15.000.0709 - 0.5906
                    0.25
                    Thickness (mmin)
                    Typical CET (%)
                    1.80 - 15.000.0709 - 0.5906
                    0.18
                    CET and CEV formula

                    Tolerances

                    SSAB Domex is delivered with SSAB Domex tolerances, with improved guarantees compared to EN 10051. More details are available at SSAB.com

                    Thickness

                    SSAB Domex thickness tolerances correspond to 2/3 of EN 10051 as default value. After special agreement, tolerances down to 1/3 of EN 10051 can be delivered for certain products and dimensions.

                    Length and Width

                    SSAB Domex tolerances for width and length are according to SSAB standard and offer narrower width and length tolerances compared to EN 10051.

                    For coil and sheet with mill edge, the width tolerances are corresponding to -0/+20 mm.

                    For coil and sheet with cut edge, the width tolerances are corresponding to -0/+2 mm.

                    After special agreement, tighter tolerances can be delivered for certain products and dimensions. Length tolerances only apply for cut to length sheets.

                    Shape

                    According to EN 10051. Narrower tolerances are available on request.

                    Flatness

                    SSAB Domex tolerances guarantee a maximum flatness deviation of 3 mm/m in addition to the EN 10051 flatness requirements.

                    Flatness guarantees only apply for cut to length sheets.

                    Surface Properties

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

                    Delivery Conditions

                    Thermomechanically rolled.

                    Surface and edge condition

                    SSAB Domex MC products are available with non-pickled or pickled surface with mill or cut edge.

                    Fabrication and Other Recommendations

                    SSAB Domex MC are cold forming steels not suited for heat treatments at temperatures above 580°C, since the material may then lose its guaranteed properties.

                    SSAB Domex is well suited for all common thermal and mechanical cutting processes. SSAB Domex offers good cold forming properties. Welding can be performed, using all common methods and consumables.

                    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