Docol® Tube 980DP

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    General Product Description

    Docol® Tube 980 is advanced ultra-high-strength precision tube made from dual-phase steel. Available in circular, square and rectangular shapes, it comes either with cold rolled (uncoated) or galvanized surface. Customized shapes and other tailoring options are available upon request. Typical uses include automotive safety parts, where lightness and energy absorption are important.

    Dimension Range

    Docol Tube 980DP is available in circular, square and rectangular shapes.

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      Shapes Dimensions
      Circular (mm) 28 - 60
      Square (mm) 25x25 - 50x50
      Rectangular (mm) 40x20 - 60x40
      Wall thickness (mm) 1.0 - 2.0
      Mill length (mm) 6000
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        Shapes
        Circular (mm)
        Dimensions
        28 - 60
        Shapes
        Square (mm)
        Dimensions
        25x25 - 50x50
        Shapes
        Rectangular (mm)
        Dimensions
        40x20 - 60x40
        Shapes
        Wall thickness (mm)
        Dimensions
        1.0 - 2.0
        Shapes
        Mill length (mm)
        Dimensions
        6000

        Other shapes, sizes and lengths are available upon request.

        Circular Dimensions

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          Outer diameter (mm) 1.0 mm (kg/m) 1.25 mm (kg/m) 1.5 mm (kg/m) 2.0 mm (kg/m)
          28 0.666 0.825 0.980
          30 0.715 0.886 1.05 1.38
          32 0.765 0.948 1.13 1.48
          35 0.838 1.04 1.24 1.63
          36 0.863 1.07 1.28 1.68
          38 0.912 1.13 1.35 1.78
          40 1.20 1.42 1.87
          41 1.22 1.46 1.92
          44 1.32 1.57 2.07
          48 1.44 1.72 2.27
          50 1.79 2.37
          55 1.98 2.61
          57 2.05 2.71
          60 2.16 2.86
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            Square Dimensions

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              Height x Width (mm) 1.0 mm (kg/m) 1.25 mm (kg/m) 1.5 mm (kg/m) 2.0 mm (kg/m)
              25 x 25 0.715 0.886 1.05 1.38
              30 x 30 1.10 1.30 1.68
              32 x 32 1.18 1.39 1.80
              35 x 35 1.29 1.53 1.99
              40 x 40 1.77 2.31
              50 x 50 2.24 2.93
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                Rectangular Dimensions

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                  Height x Width (mm) 1.25 mm (kg/m) 1.5 mm (kg/m) 2.0 mm (kg/m)
                  40 x 20 1.10 1.30 1.68
                  40 x 25 1.20 1.42 1.84
                  40 x 30 1.29 1.53 1.99
                  45 x 15 1.10 1.30 1.68
                  50 x 20 1.29 1.53 1.99
                  50 x 25 1.39 1.65 2.15
                  50 x 30 1.49 1.77 2.31
                  50 x 40 2.00 2.62
                  60 x 20 1.77 2.31
                  60 x 30 2.00 2.62
                  60 x 40 2.24 2.93
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                    Mechanical Properties

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                      Yield strength Rp0.2
                      (min MPa)
                      Tensile strength Rm
                      (min MPa)
                      Elongation A
                      (min %)
                      CR750Y980T-DP 750 980 5
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                        Mechanical properties meet or exceed the requirements of EN 10219.

                        The mechanical properties for rectangular hollow sections are tested by SSAB on the longer side of the cross section.

                        Chemical Composition (ladle analysis)

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                          C
                          (max %)
                          Si
                          (max %)
                          Mn
                          (max %)
                          P
                          (max %)
                          S
                          (max %)
                          Nb+Ti
                          (max %)
                          Cr+Mo
                          (max %)
                          B
                          (max %)
                          Cu
                          (max %)
                          CR750Y980T-DP 0.20 1.00 2.90 0.050 0.010 0.15 1.40 0.005 0.20
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                            Chemical composition meets the requirements of VDA 239-100.

                            Tolerances

                            Tolerance Circular

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                              Characteristic Circular precision tubes
                              Tolerances based on the requirements of EN 10305-3
                              Outside diameter (D) (1
                              D < 20 mm
                              20 ≤ D < 32 mm
                              32 ≤ D < 44 mm
                              44 ≤ D < 55 mm
                              55 ≤ D < 70 mm
                              70 ≤ D < 80 mm
                              80 ≤ D < 100 mm

                              ±0.12 mm
                              ±0.15 mm
                              ±0.20 mm
                              ±0.25 mm
                              ±0.30 mm
                              ±0.35 mm
                              ±0.40 mm
                              Out-of-roundness The diameter tolerances include the out-of-roundness
                              Thickness (T) T ≤ 1.5 mm: ±0.15 mm
                              T>1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                              Straightness Maximum 0.15% of measured length
                              Height of internal weld bead, g;
                              Bead removed
                              Bead not removed

                              g ≤ 0.3 mm
                              g < 1.0 mm, when T ≤ 1.5 mm
                              g < 0.8 x T, when 1.5 mm < T ≤ 2.0 mm
                              Mill length 0/+50 mm, standard length 6000 mm
                              Exact length, single cutting Agreed at the time of enquiry and order
                              Exact length, bundle cutting Agreed at the time of enquiry and order
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                                Characteristic
                                Outside diameter (D) (1
                                D < 20 mm
                                20 ≤ D < 32 mm
                                32 ≤ D < 44 mm
                                44 ≤ D < 55 mm
                                55 ≤ D < 70 mm
                                70 ≤ D < 80 mm
                                80 ≤ D < 100 mm
                                Circular precision tubes
                                Tolerances based on the requirements of EN 10305-3

                                ±0.12 mm
                                ±0.15 mm
                                ±0.20 mm
                                ±0.25 mm
                                ±0.30 mm
                                ±0.35 mm
                                ±0.40 mm
                                Characteristic
                                Out-of-roundness
                                Circular precision tubes
                                Tolerances based on the requirements of EN 10305-3
                                The diameter tolerances include the out-of-roundness
                                Characteristic
                                Thickness (T)
                                Circular precision tubes
                                Tolerances based on the requirements of EN 10305-3
                                T ≤ 1.5 mm: ±0.15 mm
                                T>1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                Characteristic
                                Straightness
                                Circular precision tubes
                                Tolerances based on the requirements of EN 10305-3
                                Maximum 0.15% of measured length
                                Characteristic
                                Height of internal weld bead, g;
                                Bead removed
                                Bead not removed
                                Circular precision tubes
                                Tolerances based on the requirements of EN 10305-3

                                g ≤ 0.3 mm
                                g < 1.0 mm, when T ≤ 1.5 mm
                                g < 0.8 x T, when 1.5 mm < T ≤ 2.0 mm
                                Characteristic
                                Mill length
                                Circular precision tubes
                                Tolerances based on the requirements of EN 10305-3
                                0/+50 mm, standard length 6000 mm
                                Characteristic
                                Exact length, single cutting
                                Circular precision tubes
                                Tolerances based on the requirements of EN 10305-3
                                Agreed at the time of enquiry and order
                                Characteristic
                                Exact length, bundle cutting
                                Circular precision tubes
                                Tolerances based on the requirements of EN 10305-3
                                Agreed at the time of enquiry and order

                                1)For a maximum distance of 100 mm, the ends may, due to the cutting method, have diameters outside the tolerances.

                                Tolerance Square

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                                  Characteristic Square precision tubes
                                  Tolerances meet or exceed the requirements of EN 10305-5
                                  Outside dimensions (H) and (B), longer side1)
                                  H < 25 mm
                                  25 ≤ H < 40 mm
                                  40 ≤ H < 60 mm
                                  60≤ H < 70 mm

                                  ±0.20 mm
                                  ±0.25 mm
                                  ±0.30 mm
                                  ±0.35 mm
                                  Side concavity and convexity Included in outside dimension tolerance
                                  Thickness (T) T≤ 1.5 mm: ±0.15 mm
                                  T>1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                  Straightness Maximum 0.15% of measured tube length when shorter side length > 30 mm
                                  Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm
                                  Location of weld seam from the centre line On narrow side for square and rectangular, optionally on wide side. On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater.
                                  Height of internal weld bead, g;
                                  Bead removed
                                  Bead not removed

                                  g ≤ 0.3 mm
                                  g < 1.0 mm, when T ≤ 1.5 mm
                                  g < 0.8 x T, when 1.5 mm < T ≤ 2.0 mm
                                  Squareness of side 90° ±1°
                                  Corner profile R ≤ 4.0 x T, typically R ≤ 3.0 x T
                                  Twist (V) V ≤ 3 mm for B and H ≤ 30 mm
                                  V ≤ B/10 or ≤ H/10 for B or H > 30 mm
                                  Mill length 0/+50 mm, standard length 6000 mm
                                  Exact length, single cutting Agreed at the time of enquiry and order
                                  Exact length, bundle cutting Agreed at the time of enquiry and order
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                                    Characteristic
                                    Outside dimensions (H) and (B), longer side1)
                                    H < 25 mm
                                    25 ≤ H < 40 mm
                                    40 ≤ H < 60 mm
                                    60≤ H < 70 mm
                                    Square precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-5

                                    ±0.20 mm
                                    ±0.25 mm
                                    ±0.30 mm
                                    ±0.35 mm
                                    Characteristic
                                    Side concavity and convexity
                                    Square precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-5
                                    Included in outside dimension tolerance
                                    Characteristic
                                    Thickness (T)
                                    Square precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-5
                                    T≤ 1.5 mm: ±0.15 mm
                                    T>1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                    Characteristic
                                    Straightness
                                    Square precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-5
                                    Maximum 0.15% of measured tube length when shorter side length > 30 mm
                                    Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm
                                    Characteristic
                                    Location of weld seam from the centre line
                                    Square precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-5
                                    On narrow side for square and rectangular, optionally on wide side. On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater.
                                    Characteristic
                                    Height of internal weld bead, g;
                                    Bead removed
                                    Bead not removed
                                    Square precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-5

                                    g ≤ 0.3 mm
                                    g < 1.0 mm, when T ≤ 1.5 mm
                                    g < 0.8 x T, when 1.5 mm < T ≤ 2.0 mm
                                    Characteristic
                                    Squareness of side
                                    Square precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-5
                                    90° ±1°
                                    Characteristic
                                    Corner profile
                                    Square precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-5
                                    R ≤ 4.0 x T, typically R ≤ 3.0 x T
                                    Characteristic
                                    Twist (V)
                                    Square precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-5
                                    V ≤ 3 mm for B and H ≤ 30 mm
                                    V ≤ B/10 or ≤ H/10 for B or H > 30 mm
                                    Characteristic
                                    Mill length
                                    Square precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-5
                                    0/+50 mm, standard length 6000 mm
                                    Characteristic
                                    Exact length, single cutting
                                    Square precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-5
                                    Agreed at the time of enquiry and order
                                    Characteristic
                                    Exact length, bundle cutting
                                    Square precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-5
                                    Agreed at the time of enquiry and order

                                    1)For a maximum distance of 100 mm, the ends may, due to the cutting method, have diameters outside the tolerances.

                                    Tolerance Rectangular

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                                      Characteristic Rectangular precision tubes
                                      Tolerances meet or exceed the requirements of EN 10305-5
                                      Outside dimensions (H) and (B), longer side1)
                                      H < 25 mm
                                      25 ≤ H < 40 mm
                                      40 ≤ H < 60 mm
                                      60≤ H < 70 mm
                                      70 ≤ H < 80 mm
                                      80 ≤ H < 90 mm
                                      90 ≤ H < 100 mm
                                      100 ≤ H < 120 mm

                                      ±0.20 mm
                                      ±0.25 mm
                                      ±0.30 mm
                                      ±0.35 mm
                                      ±0.40 mm
                                      ±0.50 mm
                                      Side concavity and convexity Included in outside dimension tolerance
                                      Thickness (T) T≤ 1.5 mm: ±0.15 mm
                                      T>1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                      Straightness Maximum 0.15% of measured tube length when shorter side length > 30 mm
                                      Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm
                                      Location of weld seam from the centre line On narrow side for square and rectangular, optionally on wide side. On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater.
                                      Height of internal weld bead, g;
                                      Bead removed
                                      Bead not removed

                                      g ≤ 0.3 mm
                                      g < 1.0 mm, when T ≤ 1.5 mm
                                      g < 0.8 x T, when 1.5 mm < T ≤ 2.0 mm
                                      Squareness of side 90° ±1°
                                      Corner profile R ≤ 4.0 x T, typically R ≤ 3.0 x T
                                      Twist (V) V ≤ 3 mm for B and H ≤ 30 mm
                                      V ≤ B/10 or ≤ H/10 for B or H > 30 mm
                                      Mill length 0/+50 mm, standard length 6000 mm
                                      Exact length, single cutting Agreed at the time of enquiry and order
                                      Exact length, bundle cutting Agreed at the time of enquiry and order
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                                        Characteristic
                                        Outside dimensions (H) and (B), longer side1)
                                        H < 25 mm
                                        25 ≤ H < 40 mm
                                        40 ≤ H < 60 mm
                                        60≤ H < 70 mm
                                        70 ≤ H < 80 mm
                                        80 ≤ H < 90 mm
                                        90 ≤ H < 100 mm
                                        100 ≤ H < 120 mm
                                        Rectangular precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5

                                        ±0.20 mm
                                        ±0.25 mm
                                        ±0.30 mm
                                        ±0.35 mm
                                        ±0.40 mm
                                        ±0.50 mm
                                        Characteristic
                                        Side concavity and convexity
                                        Rectangular precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5
                                        Included in outside dimension tolerance
                                        Characteristic
                                        Thickness (T)
                                        Rectangular precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5
                                        T≤ 1.5 mm: ±0.15 mm
                                        T>1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                        Characteristic
                                        Straightness
                                        Rectangular precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5
                                        Maximum 0.15% of measured tube length when shorter side length > 30 mm
                                        Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm
                                        Characteristic
                                        Location of weld seam from the centre line
                                        Rectangular precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5
                                        On narrow side for square and rectangular, optionally on wide side. On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater.
                                        Characteristic
                                        Height of internal weld bead, g;
                                        Bead removed
                                        Bead not removed
                                        Rectangular precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5

                                        g ≤ 0.3 mm
                                        g < 1.0 mm, when T ≤ 1.5 mm
                                        g < 0.8 x T, when 1.5 mm < T ≤ 2.0 mm
                                        Characteristic
                                        Squareness of side
                                        Rectangular precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5
                                        90° ±1°
                                        Characteristic
                                        Corner profile
                                        Rectangular precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5
                                        R ≤ 4.0 x T, typically R ≤ 3.0 x T
                                        Characteristic
                                        Twist (V)
                                        Rectangular precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5
                                        V ≤ 3 mm for B and H ≤ 30 mm
                                        V ≤ B/10 or ≤ H/10 for B or H > 30 mm
                                        Characteristic
                                        Mill length
                                        Rectangular precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5
                                        0/+50 mm, standard length 6000 mm
                                        Characteristic
                                        Exact length, single cutting
                                        Rectangular precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5
                                        Agreed at the time of enquiry and order
                                        Characteristic
                                        Exact length, bundle cutting
                                        Rectangular precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5
                                        Agreed at the time of enquiry and order

                                        1)For a maximum distance of 100 mm, the ends may, due to the cutting method, have diameters outside the tolerances.

                                        Coating and Surfaces

                                        Surface designation and general usability

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                                          Designation Definition Usability
                                          UC Uncoated (cold rolled) Paintability or chromium plating are required
                                          GI Zinc coated (zinc 99%) Corrosion resistance is required
                                          GA Galvannealed coated (zinc 90%-iron 10%) Corrosion resistance and paintability are required
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                                            Surface is slightly oiled to protect it from corrosion during transportation and short-term storage. By request, tubes can be delivered dry, however in that case SSAB will not be responsible for any possible rust.

                                            Surface roughness, Ra

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                                              Designation Ra value
                                              UC < 0.6 µm
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                                                Designation
                                                UC
                                                Ra value
                                                < 0.6 µm

                                                Different metal coatings and minimum coating mass

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                                                  Coating thickness 1)(µm) Zinc (GI) 2) (g/m2) Galvannealed (GA) 2) (g/m2)
                                                  7 GI50/50 GA50/50
                                                  8 GI60/60 GA60/60
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                                                    1) Theoretical guidance values for coating thickness per surface.

                                                    2) Minimum coating mass - g/m2 refers the coating mass for each side in g/m2 according to VDA 239-100.

                                                    Indicative specification for proper coating selection

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                                                      Coating type Coating mass (g/m2) Coating life - marine (year) Properties
                                                      GI 50/50 10 Good weldability and formability with tolerable corrosion resistance.
                                                      GI 60/60 15 Good combination of corrosion resistance and usability.
                                                      GA 50/50 15 Superior paint adhesion and corrosion reistance as painted. Weldability in same level as cold rolled material under proper welding conditions.
                                                      GA 60/60 17 Superior paint adhesion and corrosion reistance as painted. Weldability in same level as cold rolled material under proper welding conditions.
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                                                        Delivery Conditions

                                                        The tubes are not intended to undergo any heat treatment after welding and sizing as that may alter the mechanical properties of the material.

                                                        The tubes are oiled with anti-corrosive oil.

                                                        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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