Docol® 700LA high strength low alloy

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    General Product Description

    The Docol 700LA steels are high-strength low-alloy steels that offer consistent properties for modern, rapid production methods. The Docol 700LA steels are made for cold forming of stronger and lighter structures. Typical applications include components and parts in demanding load-bearing structures such as chassis. Docol HR700LA-UC can after agreement be adapted and delivered as dual certified with S700MC according to EN 10149-2.

    Dimension Range

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

    Hot rolled / EG: thickness 2.00-3.00 mm, width up to 1360 mm.

    Hot rolled / GI: thickness 2.00-4.00 mm, width up to 1400 mm.

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

    Grade and coating specific restrictions on available dimensions may occur.

    Mechanical Properties

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      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​700LA VDA 239-100 UC, EG L 700 - 850 750 - 950 10 13 1.2 x t
      VDA 239-100 GI* L 700 - 850 750 - 950 10 2) 1.2 x t
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      Comparison

        The testing of mechanical properties of electro galvanized products is conducted without coating.

        * 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)

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          Coating C
          (max %)
          Si
          (max %)
          Mn
          (max %)
          P
          (max %)
          S
          (max %)
          Al
          (%)
          Ti
          (max %)
          Nb
          (max %)
          Cu
          (max %)
          Docol HR​700LA UC, EG, GI* 0.12 0.60 2.10 0.030 0.025 From 0.015 0.20 0.10 0.20
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          Comparison

            * Available upon request.

            Tolerances

            Hot rolled (UC, EG): 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.

            Electrogalvanized coating (EG) is applied continuously by electro deposition. The coating consists of zinc (>99%). Electrogalvanized steel is characterized by its excellent surface quality and uniform coating thickness.

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

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              Coating type Coating class Standard Closest in EN standard, informative 1) Coating mass per side, single spot test (g/m2) Thickness per side informative (µm)
              GI 40/40 VDA 239-100 Z100 40 - 60 2) 5.6 - 8.5
              GI 50/50 VDA 239-100 50 - 70 2) 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
              EG 12/12 VDA 239-100 ZE25/25 12 - 32 1.7 - 4.5
              EG 18/18 VDA 239-100 18 - 38 2.5 - 5.4
              EG 29/29 VDA 239-100 ZE50/50 29 - 49 4.1 - 6.9
              EG 47/47 VDA 239-100 ZE75/75 47 - 61 6.6 - 8.6
              EG 50/50 VDA 239-100 50 - 70 7.0 - 9.9
              EG 53/53 VDA 239-100 53 - 73 7.5 - 10.3
              EG 60/60 VDA 239-100 60 - 80 8.5 - 11.3
              EG 65/65 VDA 239-100 ZE100/100 65 - 85 9.2 - 12.0
              EG 70/70 VDA 239-100 70 - 90 9.9 - 12.7
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              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 GI and GA the closest informative value refers to EN 10346. For EG to EN 10152.

                2) 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.

                Electrogalvanized (EG): available as oiled and/or chemically passivated or phosphated.

                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

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