Strenx® Tube 700QLH

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    General Product Description

    Strenx® Tube 700QLH is plasma-welded, quenched and tempered hollow section with a minimum yield strength of 700 MPa.

    Its high strength, combined with naturally stiff form of the welded hollow section, enables construction of stronger and lighter structures. Strenx® Tube 700QLH meets or exceeds the requirements of prEN 10210 (2016).

    Typical applications are load-bearing lattice structures in the lifting, material handling and transportation sectors, especially in conditions where extremely good toughness is needed. 

    Dimension Range

    Strenx® Tube 700QLH is available at circular shape.
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      Shapes Circular
      Circular (mminches) 76.1 - 133.03.000 - 5.236
      Wall thickness (mminches) 3.0 - 6.00.118 - 0.236
      Mill length (mminches) 6000 - 12000236.200 - 472.440
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        Shapes
        Circular (mminches)
        Circular
        76.1 - 133.03.000 - 5.236
        Shapes
        Wall thickness (mminches)
        Circular
        3.0 - 6.00.118 - 0.236
        Shapes
        Mill length (mminches)
        Circular
        6000 - 12000236.200 - 472.440

        Circular Dimensions

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          Outer diameter (mminches) 3.0 mm (kg/mft-lbs) 4.0 mm (kg/mft-lbs) 5.0 mm (kg/mft-lbs) 6.0 mm (kg/mft-lbs)
          76.13.000 5.413.635 7.11 8.775.893 10.46.988
          85.03.346 6.074.078 7.99 8.775.893 11.697.855
          88.93.500 6.364.273 8.38 10.46.988 12.38.264
          101.64.000 7.294.898 9.63 11.97.996 14.29.541
          108.04.252 7.775.221 10.3 12.78.533 15.110.146
          114.34.500 8.235.530 10.9 13.59.071 16.010.750
          121.04.764 8.735.866 11.5 14.39.608 17.011.422
          133.05.236 9.626.464 12.7 15.810.616 18.812.632
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            Mechanical Properties

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              Yield strength Rp0.2
              (min MPaksi)
              Tensile strength Rm
              (MPaksi)
              Elongation A5
              (min %)
              Strenx® Tube 700QLH 700101 780 - 930113 - 135 14
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                Mechanical properties meet the requirements of prEN 10210 (2016).

                Impact Properties

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                  Diameter (mminches) Min impact energy for transversal testing,
                  Charpy V 10x10 mm test specimen 1)
                  76.1 - 133.03.000 - 5.236 40 J / -40 °C
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                    Diameter (mminches)
                    76.1 - 133.03.000 - 5.236
                    Min impact energy for transversal testing,
                    Charpy V 10x10 mm test specimen 1)
                    40 J / -40 °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 %)
                      Cr
                      (max %)
                      Ni
                      (max %)
                      Mo
                      (max %)
                      B
                      (max %)
                      0.20 0.60 1.60 0.020 0.010 0.80 2.0 0.70 0.005
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                        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) 3.0 - 6.00.118 - 0.236
                          Typ CET(CEV) 0.34 (0.48)
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                            Wall Thickness (mm)
                            Typ CET(CEV)
                            3.0 - 6.00.118 - 0.236
                            0.34 (0.48)
                            CET and CEV formula

                            Tolerance Circular

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                              Characteristic Circular hollow sections
                              Tolerances meet or exceed the requirements of EN 10210
                              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) ±10%
                              Straightness 0.20% of total length and 3 mm over any 1 m length
                              Mass per unit length Individual tube: ±6%
                              Mill length ≥ 6000 mm: 0/+50 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 10210
                                ±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 10210
                                2%, when D/T ≤ 100
                                Characteristic
                                Thickness (T)
                                Circular hollow sections
                                Tolerances meet or exceed the requirements of EN 10210
                                ±10%
                                Characteristic
                                Straightness
                                Circular hollow sections
                                Tolerances meet or exceed the requirements of EN 10210
                                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 10210
                                Individual tube: ±6%
                                Characteristic
                                Mill length
                                Circular hollow sections
                                Tolerances meet or exceed the requirements of EN 10210
                                ≥ 6000 mm: 0/+50 mm
                                Characteristic
                                Exact length
                                Circular hollow sections
                                Tolerances meet or exceed the requirements of EN 10210
                                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 plasma welded quenched and tempered.