Docol® 500DP dual phase

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    General Product Description

    Docol 500DP dual-phase steel possesses good formability and weldability and is suitable for car safety components such as reinforcements. This steel undergoes special heat treatment, producing mainly two phase structure. Ferrite that imparts unique forming properties represents one phase, and martensite that accounts for the strength represents the other phase. Bainite may be present as complementary phase.

    Dimension Range

    Cold rolled / UC: thickness 0.50-2.10 mm, width up to 1527 mm.

    Cold rolled / GI, GA, ZA: thickness 0.70-3.00 mm, width up to 1520 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
      (min %)
      n4-6
      (min)
      n10-20/Ag
      (min)
      BH2
      (min MPa)
      Min. inner bending radius for a 90° bend 2)
      Docol CR​290Y​490T-​DP VDA 239-100 UC L 290 - 380 490 - 600 24 0.19 0.15 30 0.0 x t
      VDA 239-100 GI, GA*, ZA L 290 - 380 490 - 600 24 1) 0.19 0.15 30 0.5 x t
      Docol CR​230Y​500T-​DL SSAB UC T 230 - 300 500 - 600 24 0.0 x t
      Docol CR​290Y​500T-​DP SSAB UC T 290 - 370 500 - 600 20 0.0 x t
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      Comparison

        *Available upon request.

        1) For GA coatings the minimum elongation value is reduced by 2 units.

        2) 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. For GA coatings the minimum elongation value is reduced by 2 units.

        Chemical Composition (ladle analysis)

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          Coating C
          (max %)
          Si
          (max %)
          Mn
          (max %)
          P
          (max %)
          S
          (max %)
          Al
          (%)
          Nb+Ti
          (max %)
          Cr+Mo
          (max %)
          B
          (max %)
          Docol CR​290Y​490T-​DP UC 0.10 0.50 1.00 0.025 0.010 From 0.015 0.10
          GI, GA*, ZA 0.14 0.50 1.80 0.050 0.010 0.015 - 1.0 0.15 1.00 0.005
          Docol CR​230Y​500T-​DL UC 0.08 0.40 1.80 0.025 0.010 From 0.015 0.10
          Docol CR​290Y​500T-​DP UC 0.10 0.50 1.00 0.025 0.010 From 0.015 0.10
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          Comparison

            * Available upon request.

            Tolerances

            Cold rolled (UC): Tolerances in accordance to EN 10131.

            Hot-dip galvanized (GI, GA, ZA): 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.

            Galvannealed coating (GA) is a zinc-iron alloy coating having an iron content of approximately 10%. Galvannealed is produced by post-heat treatment in continuous hot-dip coating process. Galvannealed provides excellent resistance weldability and corrosion protection of painted products.

            Galfan coating (ZA) is a zinc-aluminium alloy coating having the eutectic composition approximately of 95% Zn and 5% Al. Galfan is produced in continuous hot-dip coating process. Galfan has better anticorrosive and forming properties than conventional hot-dip zinc coating (GI).

            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 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 5.6 - 8.5
              GI 50/50 VDA 239-100 50 - 70 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
              GA 40/40 VDA 239-100 ZF100 40 - 60 5.6 - 8.5
              GA 50/50 VDA 239-100 ZF120 50 - 80 7.0 - 11.3
              ZA 95 EN 10346 ZA95 7.0 -
              ZA 130 EN 10346 ZA130 10.0 -
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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.

                Surface Treatments

                Uncoated (UC): available as oiled.

                Hot-dip galvanized (GI, GA, ZA): 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® dual phase steel product offer

                Docol® 500DP dual phase

                Docol® 600DP dual phase

                Docol® 800DP dual phase

                Docol® 1000DP dual phase

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