Docol® S650MC high strength low alloy

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General Product Description

The high-strength structural steel Docol S650MC is a hot-rolled steel made for cold forming, with a minimum yield strength of 650 MPa for stronger and lighter structures. Docol S650MC meets or exceeds the requirements of S650MC in EN 10149-2. Typical applications include a wide range of heavy trucks components and parts, such as frame rails and cross-members. Docol S650MC comes in coils, slit coils and cut-to-length sheets.

Dimension Range

Hot rolled / UC: thickness 2.00-10.00 mm, width up to 1600 mm.

Slit strip and cut to length sheets are available upon request.

Mechanical Properties

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    Thickness
    (mmin)
    Standard Coating Test direction
    Yield strength ReH 1)
    (min MPaksi)
    Tensile strength Rm
    (MPaksi)
    Elongation A80 2)
    (min %)
    Elongation A5 3)
    (min %)
    Min. inner bending radius for a 90° bend 4)
    (x t)
    2.00 - 3.000.079 - 0.118 SSAB UC L 65094 700 - 850101 - 123 12 14 0.8
    3.01 - 6.000.119 - 0.236 SSAB UC L 65094 700 - 850101 - 123 14 1.2
    6.01 - 10.000.237 - 0.393 SSAB UC L 65094 700 - 850101 - 123 14 1.5
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      1) If ReH is not applicable then Rp0.2 is used. On thicknesses >8 mm the minimum yield strength may be 20MPa lower.

      2) A80 value applies for thicknesses < 3.00 mm.

      3) A5 value applies for thicknesses ≥ 3.00 mm.

      4) For both longitudinal and transverse direction.

      Impact Properties

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        Product Min. impact energy for longitudinal testing,
        Charpy V 10x10 mm test specimen
        Docol S650MC D 40 J / -20 °C29 ft-lbs / -4 °F
        Docol S650MC E 27 J / -40 °C20 ft-lbs / -40 °F
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          Product
          Docol S650MC D
          Min. impact energy for longitudinal testing,
          Charpy V 10x10 mm test specimen
          40 J / -20 °C29 ft-lbs / -4 °F
          Product
          Docol S650MC E
          Min. impact energy for longitudinal testing,
          Charpy V 10x10 mm test specimen
          27 J / -40 °C20 ft-lbs / -40 °F
          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 (heat analysis)

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            C
            (max %)
            Si
            (max %)
            Mn
            (max %)
            P
            (max %)
            S
            (max %)
            Nb
            (max %)
            V
            (max %)
            Ti
            (max %)
            0.12 0.21 1) 2.00 0.025 0.010 0.09 2) 0.20 2) 0.15 2)
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              1) If the material is to be hot-dip galvanized, this must be specified in the order. Galvanizing class A available upon request.

              2) Sum of Nb, V and Ti = max 0.22%.

              The steel is grain refined.

              Carbon Equivalent CET(CEV)

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                Thickness (mmin) 2.00 - 10.000.079 - 0.393
                Typ CET(CEV) 0.22 (0.34)
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                  Thickness (mmin)
                  Typ CET(CEV)
                  2.00 - 10.000.079 - 0.393
                  0.22 (0.34)
                  CET and CEV formula

                  Tolerances

                  Hot rolled (UC): Tolerances in accordance to EN 10051.

                  Customized dimensional and shape tolerances are available upon request.

                  Surface Treatments

                  Uncoated (UC): available as black or pickled and oiled.

                  All surface treatments are in accordance with RoHS directive (2011/65/EU) and do not contain Chromium VI (Cr6+). Surface treatments provide only temporary surface protection during transportation and storage. In order to avoid corrosion damages, care must be taken to keep the products dry during transportation and storage. If they become wet, they must be separated and situated so that they are dried quickly.

                  Fabrication and Other Recommendations

                  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.

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