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 EN 10210-3:2020.

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 (inmm) 3.000 - 5.23676.1 - 133.0
    Wall thickness (inmm) 0.118 - 0.2363.0 - 6.0
    Mill length (inmm) 236.200 - 472.4406000 - 12000
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      Shapes
      Circular (inmm)
      Circular
      3.000 - 5.23676.1 - 133.0
      Shapes
      Wall thickness (inmm)
      Circular
      0.118 - 0.2363.0 - 6.0
      Shapes
      Mill length (inmm)
      Circular
      236.200 - 472.4406000 - 12000

      Circular Dimensions

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        Outer diameter (inmm) 0.118" (ft-lbs) 0.157" (ft-lbs) 0.197" (ft-lbs) 0.236" (ft-lbs)
        3.000"76.1" 3.635 4.777 5.893 6.988
        3.346"85.0" 4.078 5.368 5.893 7.855
        3.500"88.9" 4.273 5.361 6.988 8.264
        4.000"101.6" 4.898 6.470 7.996 9.541
        4.252"108.0" 5.221 6.921 8.533 10.146
        4.500"114.3" 5.530 7.324 9.071 10.750
        4.764"121.0" 5.866 7.727 9.608 11.422
        5.236"133.0" 6.464 8.533 10.616 12.632
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          Mechanical Properties

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            Yield strength Rp0.2
            (min ksiMPa)
            Tensile strength Rm
            (ksiMPa)
            Elongation A5
            (min %)
            Strenx® Tube 700QLH 101700 113 - 135780 - 930 14
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              Mechanical properties meet the requirements of prEN 10210 (2016).

              Impact Properties

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                Diameter (inmm) Min impact energy, transverse test,
                Charpy V 0.393x0.393" test specimen 1)
                3.000 - 5.23676.1 - 133.0 30 ft-lbs / -40 °F40 J / -40 °C
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                  Diameter (inmm)
                  3.000 - 5.23676.1 - 133.0
                  Min impact energy, transverse test,
                  Charpy V 0.393x0.393" test specimen 1)
                  30 ft-lbs / -40 °F40 J / -40 °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 %)
                    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 (inmm) 0.118 - 0.2363.0 - 6.0
                        Typ CET(CEV) 0.34 (0.48)
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                          Wall Thickness (inmm)
                          Typ CET(CEV)
                          0.118 - 0.2363.0 - 6.0
                          0.34 (0.48)

                          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 ±0.0197" and a maximum of ±0.394"
                            Out-of-roundness 2%, when D/T ≤ 3.937"
                            Thickness (T) ±10%
                            Straightness 0.20% of total length and 0.118" over any 39.37" length
                            Mass per unit length Individual tube: ±6%
                            Mill length ≥ 236.22": 0/+1.969"
                            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 ±0.0197" and a maximum of ±0.394"
                              Characteristic
                              Out-of-roundness
                              Circular hollow sections
                              Tolerances meet or exceed the requirements of EN 10210
                              2%, when D/T ≤ 3.937"
                              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 0.118" over any 39.37" 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
                              ≥ 236.22": 0/+1.969"
                              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 3.937".

                              Delivery Conditions

                              The tubes are plasma welded quenched and tempered.