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 472.440"- 708.660", 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 (inmm) 5.500 - 8.626139.7 - 219.1
    Square (inmm) 3.937x3.937 - 7.874x7.874100x100 - 200x200
    Rectangular (inmm) 4.724x3.149 - 9.843x5.906120x80 - 250x150
    Wall thickness (inmm) 0.157 - 0.2364.0 - 6.0
    Mill length (inmm) 236.220 - 472.440 / 708.6606000 - 12000 / 18000
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      Shapes
      Circular (inmm)
      Dimensions
      5.500 - 8.626139.7 - 219.1
      Shapes
      Square (inmm)
      Dimensions
      3.937x3.937 - 7.874x7.874100x100 - 200x200
      Shapes
      Rectangular (inmm)
      Dimensions
      4.724x3.149 - 9.843x5.906120x80 - 250x150
      Shapes
      Wall thickness (inmm)
      Dimensions
      0.157 - 0.2364.0 - 6.0
      Shapes
      Mill length (inmm)
      Dimensions
      236.220 - 472.440 / 708.6606000 - 12000 / 18000

      Other shapes and sizes are available upon request. 

      Circular Dimensions

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        Outer diameter (inmm) 0.157" (ft-lbs) 0.197" (ft-lbs) 0.236" (ft-lbs)
        5.500"139.7" 9.003 11.154 13.304
        6.626"168.3" 10.885 13.505 16.126
        8.626"219.1" 17.738 21.165
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          Square Dimensions

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            Height x Width (inmm) 0.157" (ft-lbs) 0.197" (ft-lbs) 0.236" (ft-lbs)
            3.937 x 3.937100 x 100 7.794
            4.724 x 4.724120 x 120 9.474 11.691 13.774
            5.512 x 5.512140 x 140 11.221 13.774 16.327
            0.2325 x 5.906150 x 150 14.849 17.604
            6.299 x 6.299160 x 160 15.924 18.813
            7.087 x 7.087180 x 180 18.007 21.366
            7.874 x 7.874200 x 200 23.920
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              Rectangular Dimensions

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                Height x Width (inmm) 0.157" (ft-lbs) 0.197" (ft-lbs) 0.236" (ft-lbs)
                4.724 x 3.149120 x 80 7.794
                5.906 x 3.937150 x 100 9.944 12.229 14.446
                6.299 x 3.150160 x 80 9.474 11.691 20.5
                7.087 x 3.937180 x 100 11.221 13.774 16.327
                7.874 x 3.150200 x 100 14.849 17.604
                7.874 x 4.724200 x 120 15.924 18.813
                9.843 x 5.906250 x 150 23.920
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                  Mechanical Properties

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                    Yield strength Rp0.2
                    (min ksiMPa)
                    Tensile strength Rm
                    (ksiMPa)
                    Elongation A5 1)
                    (min %)
                    Strenx® Tube 900MH 130900 135 - 174930 - 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, transverse test,
                        Charpy V 0.393x0.393" test specimen
                        Strenx® Tube 900MH 30 ft-lbs / -4 °F40 J / -20 °C
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                          Product
                          Strenx® Tube 900MH
                          Min impact energy, transverse test,
                          Charpy V 0.393x0.393" test specimen
                          30 ft-lbs / -4 °F40 J / -20 °C

                          1) Impact testing according to EN ISO 148-1 is performed on thicknesses ≥ 0.236". The specified minimum value corresponds to a full-size specimen.

                          Chemical Composition (heat analysis)

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                            C
                            (max %)
                            Si
                            (max %)
                            Mn
                            (max %)
                            P
                            (max %)
                            S
                            (max %)
                            Nb
                            (max %)
                            V
                            (max %)
                            Ti
                            (max %)
                            0.10 0.25 1.30 0.020 0.010 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 (inmm) 0.079 - 0.3942.0 - 10.0
                                Typ CET(CEV) 0.25 (0.50)
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                                  Wall Thickness (inmm)
                                  Typ CET(CEV)
                                  0.079 - 0.3942.0 - 10.0
                                  0.25 (0.50)

                                  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” and a maximum of ± 0.3937”
                                    Out-of-roundness 2%, when D/T ≤ 3.937”
                                    Thickness (T) When D ≤ 12.752": -5%/+10%, with a minimum of ±0.008" and maximum ±0.020"
                                    When 14.000" ≤ D ≤ 16.000" : ±10%, when T ≤ 0.197" / ±0.020", when T > 0.197"
                                    When D > 16.000" : ±10%, with a maximum of ±0.079"
                                    Straightness 0.20% of total length and 0.118” over any 39.37” length
                                    Mass per unit length Individual tube: ±6%
                                    Mill length 0/+1.969", 236.220" ≤ L ≤ 472.440 - 708.660" (standard lengths 236.220 & 472.440")
                                    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” and a maximum of ± 0.3937”
                                      Characteristic
                                      Out-of-roundness
                                      Circular hollow sections
                                      Tolerances meet or exceed the requirements of EN 10219
                                      2%, when D/T ≤ 3.937”
                                      Characteristic
                                      Thickness (T)
                                      Circular hollow sections
                                      Tolerances meet or exceed the requirements of EN 10219
                                      When D ≤ 12.752": -5%/+10%, with a minimum of ±0.008" and maximum ±0.020"
                                      When 14.000" ≤ D ≤ 16.000" : ±10%, when T ≤ 0.197" / ±0.020", when T > 0.197"
                                      When D > 16.000" : ±10%, with a maximum of ±0.079"
                                      Characteristic
                                      Straightness
                                      Circular hollow sections
                                      Tolerances meet or exceed the requirements of EN 10219
                                      0.20% of total length and 0.118” over any 39.37” 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/+1.969", 236.220" ≤ L ≤ 472.440 - 708.660" (standard lengths 236.220 & 472.440")
                                      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 3.937".

                                      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 < 3.937" ±1 % minimum ±0.020"
                                        When 3.937" ≤ B, H ≤ 7.874": ±0.8%
                                        When B, H > 7.874": ±0.6%
                                        Thickness (T) 5%/+10%, with a minimum of ±0.008" and maximum ±0.020"
                                        External corner profile 2.0 x T – 3.0 x T
                                        Squareness of side 90° ±1°
                                        Concavity/convexity 0.8%, with a minimum of 0.020"
                                        Twist 0.079" + 0.020"/39.370"
                                        Straightness 0.20% of total length and 0.118” over any 39.37” length
                                        Mass per unit length Individual tube: ±6%
                                        Mill length 0/+1.969", 236.220" ≤ L ≤ 472.440 - 708.660" (standard lengths 236.220 & 472.440")
                                        Exact length Agreed at the time of enquiry and order
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                                        Comparison

                                          Characteristic
                                          Outside dimensions (B, H) 1)
                                          Square hollow sections
                                          Tolerances meet or exceed the requirements of EN 10219
                                          When B, H < 3.937" ±1 % minimum ±0.020"
                                          When 3.937" ≤ B, H ≤ 7.874": ±0.8%
                                          When B, H > 7.874": ±0.6%
                                          Characteristic
                                          Thickness (T)
                                          Square hollow sections
                                          Tolerances meet or exceed the requirements of EN 10219
                                          5%/+10%, with a minimum of ±0.008" and maximum ±0.020"
                                          Characteristic
                                          External corner profile
                                          Square hollow sections
                                          Tolerances meet or exceed the requirements of EN 10219
                                          2.0 x T – 3.0 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 0.020"
                                          Characteristic
                                          Twist
                                          Square hollow sections
                                          Tolerances meet or exceed the requirements of EN 10219
                                          0.079" + 0.020"/39.370"
                                          Characteristic
                                          Straightness
                                          Square hollow sections
                                          Tolerances meet or exceed the requirements of EN 10219
                                          0.20% of total length and 0.118” over any 39.37” 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/+1.969", 236.220" ≤ L ≤ 472.440 - 708.660" (standard lengths 236.220 & 472.440")
                                          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 3.937".

                                          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 < 3.937" ±1 % minimum ±0.020"
                                            When 3.937" ≤ B, H ≤ 7.874": ±0.8%
                                            When B, H > 7.874": ±0.6%
                                            Thickness (T) 5%/+10%, with a minimum of ±0.008" and maximum ±0.020"
                                            External corner profile 2.0 x T – 3.0 x T
                                            Squareness of side 90° ±1°
                                            Concavity/convexity 0.8%, with a minimum of 0.020"
                                            Twist 0.079" + 0.020"/39.370"
                                            Straightness 0.20% of total length and 0.118” over any 39.37” length
                                            Mass per unit length Individual tube: ±6%
                                            Mill length 0/+1.969", 236.220" ≤ L ≤ 472.440 - 708.660" (standard lengths 236.220 & 472.440")
                                            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 < 3.937" ±1 % minimum ±0.020"
                                              When 3.937" ≤ B, H ≤ 7.874": ±0.8%
                                              When B, H > 7.874": ±0.6%
                                              Characteristic
                                              Thickness (T)
                                              Rectangular hollow sections
                                              Tolerances meet or exceed the requirements of EN 10219
                                              5%/+10%, with a minimum of ±0.008" and maximum ±0.020"
                                              Characteristic
                                              External corner profile
                                              Rectangular hollow sections
                                              Tolerances meet or exceed the requirements of EN 10219
                                              2.0 x T – 3.0 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 0.020"
                                              Characteristic
                                              Twist
                                              Rectangular hollow sections
                                              Tolerances meet or exceed the requirements of EN 10219
                                              0.079" + 0.020"/39.370"
                                              Characteristic
                                              Straightness
                                              Rectangular hollow sections
                                              Tolerances meet or exceed the requirements of EN 10219
                                              0.20% of total length and 0.118” over any 39.37” 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/+1.969", 236.220" ≤ L ≤ 472.440 - 708.660" (standard lengths 236.220 & 472.440")
                                              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 3.937".

                                              Delivery Conditions

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