Docol® 550LA high strength low alloy

More about high strength low alloy steel

Download data sheet

Select Language

Get datasheet by email
Close

Get datasheet by email

    General Product Description

    The Docol 550LA steels are high-strength low-alloy steels that offer consistent properties for modern, rapid production methods. Typical applications include bent profiles. Docol HR550LA-UC can after agreement be adapted and delivered as dual certified with S550MC according to EN 10149-2.

    Dimension Range

    Hot rolled / UC: thickness 2.00-6.00 mm, width up to 1600 mm.

    Hot rolled / GI: thickness 2.00-5.00 mm, width up to 1500 mm.

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

    Grade and coating specific restrictions on available dimensions may occur.

    Mechanical Properties

    Hide/Show specific columns Edit
    Select columns to display
      Standard Coating Test direction
      Yield strength Rp0.2
      (MPa)
      Tensile strength Rm
      (MPa)
      Elongation A80 1)
      (min %)
      Elongation A5 3)
      (%)
      Min. inner bending radius for a 90° bend 4)
      Docol HR​550LA VDA 239-100 UC, GI* L 550 - 670 610 - 750 12 2) 16 2) 1.0 x t
      Compare parameters

      Select one parameter to compare

      Comparison

        * Available upon request.

        1) A80 value applies for thicknesses < 3.00 mm.

        2) For GI coatings the minimum elongation value is reduced by 1 unit.

        3) A5 value applies for thicknesses ≥ 3.00 mm.

        4) In some cases tight bending radius may cause micro-cracking of the coating in the bend area. Where design permits, users are encouraged to employ larger radius.

        Chemical Composition (ladle analysis)

        Hide/Show specific columns Edit
        Select columns to display
          Coating C
          (max %)
          Si
          (max %)
          Mn
          (max %)
          P
          (max %)
          S
          (max %)
          Al
          (%)
          Ti
          (max %)
          Nb
          (max %)
          Cu
          (max %)
          Docol HR​550LA UC 0.12 0.60 1.80 0.025 0.025 From 0.015 0.15 0.09 0.20
          GI* 0.12 0.60 1.80 0.030 0.025 From 0.015 0.15 0.10 0.20
          Compare parameters

          Select one parameter to compare

          Comparison

            * Available upon request.

            Tolerances

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

            Hot-dip galvanized (GI): Tolerances in accordance to EN 10143.

            Customized dimensional and shape tolerances are available upon request.

            Coatings

            The metal coating options for Docol products include:

            Hot-dip zinc coating (GI) consists almost entirely of zinc (>99%). It is lead free, resulting in a small zinc spangle size. The coating provides good corrosion protection.

            Grade specific availability of metal coatings for Docol products is given in the Mechanical properties table (Coating).

            Hide/Show specific columns Edit
            Select columns to display
              Coating type Coating class Standard Closest in EN 10346, informative Coating mass per side, single spot test (g/m2) Thickness per side informative (µm)
              GI 40/40 VDA 239-100 Z100 40 - 60 1) 5.6 - 8.5
              GI 50/50 VDA 239-100 50 - 70 1) 7.0 - 9.9
              GI 60/60 VDA 239-100 Z140 60 - 90 8.5 - 12.7
              GI 70/70 VDA 239-100 70 - 100 9.9 - 14.1
              GI 85/85 VDA 239-100 85 - 115 12.0 - 16.2
              GI 115/115 VDA 239-100 Z275 115 - 155 16.2 - 21.8
              Compare parameters

              Select one parameter to compare

              Comparison

                Docol metal coated products are available with surface quality for unexposed applications.

                In addition to these coating masses, OEM specific coatings are available upon request.

                1) For hot-dipped (GI, ZA, GA) hot rolled (HR) grades, the coating mass tolerance is increased to 30 g/m² by increasing the upper limit.

                Surface Treatments

                Uncoated (UC): available as oiled.

                Hot-dip galvanized (GI): available as oiled and/or chemically passivated.

                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.

                Docol® High Strength Low Alloy steel product offer

                Docol® 420LA high strength low alloy

                Docol® S600MC high strength low alloy

                Docol® S650MC high strength low alloy

                Docol® S700MC high strength low alloy

                Docol® 460LA high strength low alloy

                Docol® 500LA high strength low alloy

                Docol® 550LA high strength low alloy

                Docol® 600LA high strength low alloy

                Docol® 650LA high strength low alloy

                Docol® 700LA high strength low alloy

                Relaterat innehåll