Strenx® Tube 900MH

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    General Product Description

    Strenx® Tube 900MH is an HF-welded cold-formed structural hollow section made of hot-rolled high-strength steel with a minimum yield strength of 900 MPa.

    Its high strength combined with naturally stiff form of welded hollow section enables construction of stronger and lighter structures. Strenx® Tube 900MH meets or exceeds the requirements of EN 10219-3 (2020). Typical applications include load-bearing structures in the lifting, handling and transportation segments.

    Strenx® Tube 900MH is available in circular, square and rectangular shapes. Other shapes and sizes are available upon request.

    The maximum length of the tubes is 12-18 meters, depending on the size. Longer or cut-to-length tubes are available upon request.

    It is not recommended to hot dip galvanize Strenx Tube 900MH hollow sections. 

    Dimension Range

    Strenx® Tube 900MH is available at circular, square and rectangular shapes.
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      Shapes Dimensions
      Circular (mm) 139.7 - 244.5
      Square (mm) 100x100 - 200x200
      Rectangular (mm) 120x80 - 250x150
      Wall thickness (mm) 4.0 - 6.0
      Mill length (mm) 6000 - 12000 / 18000
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        Shapes
        Circular (mm)
        Dimensions
        139.7 - 244.5
        Shapes
        Square (mm)
        Dimensions
        100x100 - 200x200
        Shapes
        Rectangular (mm)
        Dimensions
        120x80 - 250x150
        Shapes
        Wall thickness (mm)
        Dimensions
        4.0 - 6.0
        Shapes
        Mill length (mm)
        Dimensions
        6000 - 12000 / 18000

        Other shapes and sizes are available upon request. 

        Circular Dimensions

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          Outer diameter (mm) 4.0 mm (kg/m) 5.0 mm (kg/m) 6.0 mm (kg/m)
          139.7 13.4 16.6 19.8
          168.3 16.2 20.1 24.0
          219.1 26.4 31.5
          244.5 35.3
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            Square Dimensions

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              Height x Width (mm) 4.0 mm (kg/m) 5.0 mm (kg/m) 6.0 mm (kg/m)
              100 x 100 11.6
              120 x 120 14.1 17.4 20.5
              140 x 140 16.7 20.5 24.3
              150 x 150 22.1 26.2
              160 x 160 23.7 28.0
              180 x 180 26.8 31.8
              200 x 200 35.6
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                Rectangular Dimensions

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                  Height x Width (mm) 4.0 mm (kg/m) 5.0 mm (kg/m) 6.0 mm (kg/m)
                  120 x 80 11.6
                  150 x 100 14.8 18.2 21.5
                  160 x 80 14.1 17.4 20.5
                  180 x 100 16.7 20.5 24.3
                  200 x 100 22.1 26.2
                  200 x 120 23.7 28.0
                  250 x 150 35.6
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                    Mechanical Properties

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                      Yield strength Rp0.2
                      (min MPa)
                      Tensile strength Rm
                      (MPa)
                      Elongation A5 1)
                      (min %)
                      Strenx® Tube 900MH 900 930 - 1200 7
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                        1) The hollow sections with D/T < 15 (round) or (B + H)/2T < 12,5 (rectangular and square), the minimum value of elongation is reduced by 2.

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

                        Mechanical properties meet the requirements of EN 10219-3 (2020).

                        Impact Properties

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                          Product Min impact energy for transversal testing,
                          Charpy V 10x10 mm test specimen
                          Strenx® Tube 900MH 40 J / -20 °C
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                            Product
                            Strenx® Tube 900MH
                            Min impact energy for transversal testing,
                            Charpy V 10x10 mm test specimen
                            40 J / -20 °C

                            1) Impact testing according to EN ISO 148-1 is performed on thicknesses ≥ 6 mm. The specified minimum value corresponds to a full-size specimen.

                            Chemical Composition (ladle analysis)

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                              C
                              (max %)
                              Si
                              (max %)
                              Mn
                              (max %)
                              P
                              (max %)
                              S
                              (max %)
                              Altot
                              (min %)
                              Nb
                              (max %)
                              V
                              (max %)
                              Ti
                              (max %)
                              0.10 0.25 1.30 0.020 0.010 0.015 0.050 1) 0.05 1) 0.07 1)
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                                1) Sum of Nb, V and Ti = max 0.22%

                                Chemical composition meets or exceeds the requirements of EN 10219-3 (2020).

                                In addition, boron (B), molybdenum (Mo), nickel (Ni) or copper (Cu) may be used as alloying elements either singly or in combination.

                                The steel is grain refined.

                                Carbon Equivalent CET(CEV)

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                                  Wall Thickness (mm) 2.0 - 10.0
                                  Typ CET(CEV) 0.25 (0.50)
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                                    Wall Thickness (mm)
                                    Typ CET(CEV)
                                    2.0 - 10.0
                                    0.25 (0.50)
                                    CET and CEV formula

                                    Tolerance Circular

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                                      Characteristic Circular hollow sections
                                      Tolerances meet or exceed the requirements of EN 10219
                                      Outside diameter (D) (1 ±1%, with a minimum of ±0.5 mm and a maximum of ±10 mm
                                      Out-of-roundness 2%, when D/T ≤ 100
                                      Thickness (T) When D ≤ 323.9 mm: -5%/+10%, with a minimum of ±0.2 mm and maximum ±0.5 mm
                                      When 355.6 ≤ D ≤ 406.4 mm : ±10%, when T ≤ 5 mm / ±0.5 mm, when T > 5 mm
                                      When D > 406.4 mm : ±10%, with a maximum of ±2 mm
                                      Straightness 0.20% of total length and 3 mm over any 1 m length
                                      Mass per unit length Individual tube: ±6%
                                      Mill length 0/+50 mm, 6000 ≤ L ≤ 12000 - 18000 mm (standard lengths 6000 & 12000 mm)
                                      Exact length Agreed at the time of enquiry and order
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                                        Characteristic
                                        Outside diameter (D) (1
                                        Circular hollow sections
                                        Tolerances meet or exceed the requirements of EN 10219
                                        ±1%, with a minimum of ±0.5 mm and a maximum of ±10 mm
                                        Characteristic
                                        Out-of-roundness
                                        Circular hollow sections
                                        Tolerances meet or exceed the requirements of EN 10219
                                        2%, when D/T ≤ 100
                                        Characteristic
                                        Thickness (T)
                                        Circular hollow sections
                                        Tolerances meet or exceed the requirements of EN 10219
                                        When D ≤ 323.9 mm: -5%/+10%, with a minimum of ±0.2 mm and maximum ±0.5 mm
                                        When 355.6 ≤ D ≤ 406.4 mm : ±10%, when T ≤ 5 mm / ±0.5 mm, when T > 5 mm
                                        When D > 406.4 mm : ±10%, with a maximum of ±2 mm
                                        Characteristic
                                        Straightness
                                        Circular hollow sections
                                        Tolerances meet or exceed the requirements of EN 10219
                                        0.20% of total length and 3 mm over any 1 m length
                                        Characteristic
                                        Mass per unit length
                                        Circular hollow sections
                                        Tolerances meet or exceed the requirements of EN 10219
                                        Individual tube: ±6%
                                        Characteristic
                                        Mill length
                                        Circular hollow sections
                                        Tolerances meet or exceed the requirements of EN 10219
                                        0/+50 mm, 6000 ≤ L ≤ 12000 - 18000 mm (standard lengths 6000 & 12000 mm)
                                        Characteristic
                                        Exact length
                                        Circular hollow sections
                                        Tolerances meet or exceed the requirements of EN 10219
                                        Agreed at the time of enquiry and order

                                        1) All external dimensions are measured with a minimum distance from the end of the section. The distance must be a minimum of 100 mm.

                                        Tolerance Square

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                                          Characteristic Square hollow sections
                                          Tolerances meet or exceed the requirements of EN 10219
                                          Outside dimensions (B, H) 1) When B, H < 100 mm ±1 % minimum ±0.5 mm
                                          When 100 mm ≤ B, H ≤ 200 mm: ±0.8%
                                          When B, H > 200 mm: ±0.6%
                                          Thickness (T) -5% / +10 %, with a minimum of ±0.2 mm and maximum ±0.5 mm
                                          External corner profile When T ≤ 6 mm: 1.6 x T–2.4 x T
                                          When 6 mm < T ≤ 10 mm: 2.0 x T-3.0 x T
                                          When T > 10 mm: 2.4 x T–3.6 x T
                                          Squareness of side 90° ±1°
                                          Concavity/convexity 0.8%, with a minimum of 0.5 mm
                                          Twist 2 mm + 0.5 mm/m
                                          Straightness 0.15% of total length and 3 mm over any 1 m length
                                          Mass per unit length Individual tube: ±6%
                                          Mill length 0/+50 mm, 6000 ≤ L ≤ 12000 - 18000 mm (standard lengths 6000 & 12000 mm)
                                          Exact length Agreed at the time of enquiry and order
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                                            Characteristic
                                            Outside dimensions (B, H) 1)
                                            Square hollow sections
                                            Tolerances meet or exceed the requirements of EN 10219
                                            When B, H < 100 mm ±1 % minimum ±0.5 mm
                                            When 100 mm ≤ B, H ≤ 200 mm: ±0.8%
                                            When B, H > 200 mm: ±0.6%
                                            Characteristic
                                            Thickness (T)
                                            Square hollow sections
                                            Tolerances meet or exceed the requirements of EN 10219
                                            -5% / +10 %, with a minimum of ±0.2 mm and maximum ±0.5 mm
                                            Characteristic
                                            External corner profile
                                            Square hollow sections
                                            Tolerances meet or exceed the requirements of EN 10219
                                            When T ≤ 6 mm: 1.6 x T–2.4 x T
                                            When 6 mm < T ≤ 10 mm: 2.0 x T-3.0 x T
                                            When T > 10 mm: 2.4 x T–3.6 x T
                                            Characteristic
                                            Squareness of side
                                            Square hollow sections
                                            Tolerances meet or exceed the requirements of EN 10219
                                            90° ±1°
                                            Characteristic
                                            Concavity/convexity
                                            Square hollow sections
                                            Tolerances meet or exceed the requirements of EN 10219
                                            0.8%, with a minimum of 0.5 mm
                                            Characteristic
                                            Twist
                                            Square hollow sections
                                            Tolerances meet or exceed the requirements of EN 10219
                                            2 mm + 0.5 mm/m
                                            Characteristic
                                            Straightness
                                            Square hollow sections
                                            Tolerances meet or exceed the requirements of EN 10219
                                            0.15% of total length and 3 mm over any 1 m length
                                            Characteristic
                                            Mass per unit length
                                            Square hollow sections
                                            Tolerances meet or exceed the requirements of EN 10219
                                            Individual tube: ±6%
                                            Characteristic
                                            Mill length
                                            Square hollow sections
                                            Tolerances meet or exceed the requirements of EN 10219
                                            0/+50 mm, 6000 ≤ L ≤ 12000 - 18000 mm (standard lengths 6000 & 12000 mm)
                                            Characteristic
                                            Exact length
                                            Square hollow sections
                                            Tolerances meet or exceed the requirements of EN 10219
                                            Agreed at the time of enquiry and order

                                            1) All external dimensions are measured with a minimum distance from the end of the section. The distance must be a minimum of 100 mm.

                                            Tolerance Rectangular

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                                              Characteristic Rectangular hollow sections
                                              Tolerances meet or exceed the requirements of EN 10219
                                              Outside dimensions (B, H) 1) When B, H < 100 mm ±1 % minimum ±0.5 mm
                                              When 100 mm ≤ B, H ≤ 200 mm: ±0.8%
                                              When B, H > 200 mm: ±0.6%
                                              Thickness (T) -5% / +10 %, with a minimum of ±0.2 mm and maximum ±0.5 mm
                                              External corner profile When T ≤ 6 mm: 1.6 x T–2.4 x T
                                              When 6 mm < T ≤ 10 mm: 2.0 x T-3.0 x T
                                              When T > 10 mm: 2.4 x T–3.6 x T
                                              Squareness of side 90° ±1°
                                              Concavity/convexity 0.8%, with a minimum of 0.5 mm
                                              Twist 2 mm + 0.5 mm/m
                                              Straightness 0.15% of total length and 3 mm over any 1 m length
                                              Mass per unit length Individual tube: ±6%
                                              Mill length 0/+50 mm, 6000 ≤ L ≤ 12000 - 18000 mm (standard lengths 6000 & 12000 mm)
                                              Exact length Agreed at the time of enquiry and order
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                                              Comparison

                                                Characteristic
                                                Outside dimensions (B, H) 1)
                                                Rectangular hollow sections
                                                Tolerances meet or exceed the requirements of EN 10219
                                                When B, H < 100 mm ±1 % minimum ±0.5 mm
                                                When 100 mm ≤ B, H ≤ 200 mm: ±0.8%
                                                When B, H > 200 mm: ±0.6%
                                                Characteristic
                                                Thickness (T)
                                                Rectangular hollow sections
                                                Tolerances meet or exceed the requirements of EN 10219
                                                -5% / +10 %, with a minimum of ±0.2 mm and maximum ±0.5 mm
                                                Characteristic
                                                External corner profile
                                                Rectangular hollow sections
                                                Tolerances meet or exceed the requirements of EN 10219
                                                When T ≤ 6 mm: 1.6 x T–2.4 x T
                                                When 6 mm < T ≤ 10 mm: 2.0 x T-3.0 x T
                                                When T > 10 mm: 2.4 x T–3.6 x T
                                                Characteristic
                                                Squareness of side
                                                Rectangular hollow sections
                                                Tolerances meet or exceed the requirements of EN 10219
                                                90° ±1°
                                                Characteristic
                                                Concavity/convexity
                                                Rectangular hollow sections
                                                Tolerances meet or exceed the requirements of EN 10219
                                                0.8%, with a minimum of 0.5 mm
                                                Characteristic
                                                Twist
                                                Rectangular hollow sections
                                                Tolerances meet or exceed the requirements of EN 10219
                                                2 mm + 0.5 mm/m
                                                Characteristic
                                                Straightness
                                                Rectangular hollow sections
                                                Tolerances meet or exceed the requirements of EN 10219
                                                0.15% of total length and 3 mm over any 1 m length
                                                Characteristic
                                                Mass per unit length
                                                Rectangular hollow sections
                                                Tolerances meet or exceed the requirements of EN 10219
                                                Individual tube: ±6%
                                                Characteristic
                                                Mill length
                                                Rectangular hollow sections
                                                Tolerances meet or exceed the requirements of EN 10219
                                                0/+50 mm, 6000 ≤ L ≤ 12000 - 18000 mm (standard lengths 6000 & 12000 mm)
                                                Characteristic
                                                Exact length
                                                Rectangular hollow sections
                                                Tolerances meet or exceed the requirements of EN 10219
                                                Agreed at the time of enquiry and order

                                                1) All external dimensions are measured with a minimum distance from the end of the section. The distance must be a minimum of 100 mm.

                                                Delivery Conditions

                                                The tubes are cold formed and high frequency welded from thermomechanically rolled steel.