SSAB Boron Tube 22

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    General Product Description

    SSAB Boron Tube 22 is a precision tube for hardening. It offers good workshop properties in delivery condition. The degree of hardness and toughness that can be achieved after heat-treatment will provide the final products with wear- and shock resistance properties that assure longer lifetime.

    Dimension Range

    SSAB Boron Tube 22 is available at circular, square and rectangular shapes.

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      Shapes Dimensions
      Circular (mm) 16 - 88.9
      Square (mm) 19x19 - 70x70
      Rectangular (mm) 25x15 - 100x40
      Wall thickness (mm) 0.9 - 3.0
      Mill length (mm) 6000
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        Shapes
        Circular (mm)
        Dimensions
        16 - 88.9
        Shapes
        Square (mm)
        Dimensions
        19x19 - 70x70
        Shapes
        Rectangular (mm)
        Dimensions
        25x15 - 100x40
        Shapes
        Wall thickness (mm)
        Dimensions
        0.9 - 3.0
        Shapes
        Mill length (mm)
        Dimensions
        6000

        Other shapes, sizes and lengths are available upon request.

        Circular Dimensions

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          Outer diameter (mm) 0.9 mm (kg/m) 1.0 mm (kg/m) 1.25 mm (kg/m) 1.5 mm (kg/m) 2.0 mm (kg/m) 2.5 mm (kg/m) 3.0 mm (kg/m)
          16 0.335 0.370 0.455 0.536 0.691
          18 0.380 0.419 0.516 0.610 0.789
          19 0.402 0.444 0.547 0.647 0.838
          20 0.424 0.469 0.578 0.684 0.888
          22 0.468 0.518 0.640 0.758 0.986 1.20
          25 0.535 0.592 0.732 0.869 1.13 1.39 1.63
          25.4 0.544 0.602 0.744 0.884 1.15 1.41 1.66
          28 0.601 0.666 0.825 0.980 1.28 1.57 1.85
          30 0.646 0.715 0.886 1.05 1.38 1.70 2.00
          32 0.765 0.948 1.13 1.48 1.82 2.15
          35 0.838 1.04 1.24 1.63 2.00 2.37
          38 0.912 1.13 1.35 1.78 2.19 2.59
          40 0.962 1.20 1.42 1.87 2.31 2.74
          41 0.990 1.22 1.46 1.92 2.37 2.81
          41.5 0.999 1.24 1.48 1.95 2.40 2.85
          44.5 1.07 1.33 1.59 2.10 2.59 3.07
          48 1.44 1.72 2.27 2.81 3.33
          50 1.50 1.79 2.37 2.93 3.48
          50.8 1.53 1.82 2.41 2.98 3.54
          55 1.66 1.98 2.61 3.24 3.85
          57 1.72 2.05 2.71 3.36 4.00
          60 1.81 2.16 2.86 3.55 4.22
          70 2.53 3.35 4.16 4.96
          76.1 2.76 3.65 4.54 5.41
          88.9 4.29 5.33 6.36
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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) 2.5 mm (kg/m) 3.0 mm (kg/m)
              19 x 19 0.564 0.694 0.820 1.06
              20 x 20 0.595 0.733 0.868 1.12
              25 x 25 0.752 0.930 1.10 1.44 1.76
              30 x 30 0.909 1.13 1.34 1.75 2.15 2.39
              32 x 32 0.972 1.20 1.43 1.88 2.31 2.58
              35 x 35 1.07 1.32 1.57 2.07 2.54 2.86
              40 x 40 1.52 1.81 2.38 2.93 3.33
              50 x 50 1.91 2.28 3.01 3.72 4.28
              60 x 60 2.75 3.64 4.50 5.22
              70 x 70 4.26 5.29 6.16
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                Rectangular 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) 2.5 mm (kg/m) 3.0 mm (kg/m)
                  25 x 15 0.595 0.733 0.868 1.12
                  30 x 10 0.595 0.733 0.868 1.12
                  30 x 15 0.673 0.831 0.985 1.28
                  30 x 20 0.752 0.930 1.10 1.44 1.76
                  30 x 25 0.830 1.03 1.22 1.59 1.95
                  35 x 15 0.752 0.930 1.10 1.44 1.76
                  35 x 20 0.830 1.03 1.22 1.59 1.95 2.16
                  40 x 20 0.909 1.13 1.34 1.75 2.15 2.39
                  40 x 25 0.987 1.22 1.46 1.91 2.34 2.63
                  40 x 30 1.07 1.32 1.57 2.07 2.54 2.86
                  50 x 20 1.07 1.32 1.57 2.07 2.54 2.86
                  50 x 25 1.42 1.69 2.22 2.74 3.10
                  50 x 30 1.52 1.81 2.38 2.93 3.33
                  50 x 40 1.71 2.05 2.69 3.33 3.80
                  60 x 20 1.52 1.81 2.38 2.93 3.33
                  60 x 30 1.71 2.05 2.69 3.33 3.80
                  60 x 40 1.91 2.28 3.01 3.72 4.28
                  70 x 25 2.16 2.85 3.52 4.04
                  70 x 30 2.28 3.01 3.72 4.28
                  70 x 50 2.75 3.64 4.50 5.22
                  80 x 20 2.28 3.01 3.72 4.28
                  80 x 30 2.52 3.32 4.11 4.74
                  80 x 40 2.75 3.64 4.50 5.22
                  80 x 60 4.26 5.29 6.16
                  100 x 40 4.26 5.29 6.16
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                    Mechanical Properties

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                      Condition Yield strength Rp0.2
                      (min MPa)
                      Tensile strength Rm
                      (min MPa)
                      Elongation A
                      (min %)
                      As delivered 430 450 12
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                      Comparison

                        Typical mechanical properties when quenched to water:

                        Rp0.2 ~1100 Mpa; Rm ~1400 MPa; A~8%

                        Chemical Composition (ladle analysis)

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                          C
                          (max %)
                          Si
                          (max %)
                          Mn
                          (max %)
                          S
                          (max %)
                          Cr
                          (max %)
                          B
                          (max %)
                          0.25 0.40 1.40 0.010 0.40 0.0050
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                            Tolerances

                            Tolerance Circular

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                              Characteristic Circular precision tubes
                              Tolerances meet or exceed 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 < 0.6 mm, when T ≤ 1.5 mm
                              g < 0.4 x T, when 1.5 mm < T ≤ 3.0 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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                              Comparison

                                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 meet or exceed 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 meet or exceed the requirements of EN 10305-3
                                The diameter tolerances include the out-of-roundness
                                Characteristic
                                Thickness (T)
                                Circular precision tubes
                                Tolerances meet or exceed 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 meet or exceed 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 meet or exceed the requirements of EN 10305-3

                                g ≤ 0.3 mm
                                g < 0.6 mm, when T ≤ 1.5 mm
                                g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                Characteristic
                                Mill length
                                Circular precision tubes
                                Tolerances meet or exceed the requirements of EN 10305-3
                                0/+50 mm, standard length 6000 mm
                                Characteristic
                                Exact length, single cutting
                                Circular precision tubes
                                Tolerances meet or exceed the requirements of EN 10305-3
                                Agreed at the time of enquiry and order
                                Characteristic
                                Exact length, bundle cutting
                                Circular precision tubes
                                Tolerances meet or exceed 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
                                  70 ≤ H < 80 mm

                                  ±0.20 mm
                                  ±0.25 mm
                                  ±0.30 mm
                                  ±0.35 mm
                                  ±0.40 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 < 0.6 mm, when T ≤ 1.5 mm
                                  g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                  Squareness of side 90° ±1°
                                  Corner profile R < 1.5 x T, when T ≤ 2.5 mm
                                  R < 2.2 x T, when T > 2.5 mm
                                  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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                                  Comparison

                                    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
                                    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
                                    ±0.40 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 < 0.6 mm, when T ≤ 1.5 mm
                                    g < 0.4 x T, when 1.5 mm < T ≤ 3.0 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 < 1.5 x T, when T ≤ 2.5 mm
                                    R < 2.2 x T, when T > 2.5 mm
                                    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
                                      ±0.60 mm
                                      ±0.65 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 < 0.6 mm, when T ≤ 1.5 mm
                                      g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                      Squareness of side 90° ±1°
                                      Corner profile R < 1.5 x T, when T ≤ 2.5 mm
                                      R < 2.2 x T, when T > 2.5 mm
                                      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
                                      Compare parameters

                                      Select one parameter to compare

                                      Comparison

                                        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
                                        ±0.60 mm
                                        ±0.65 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 < 0.6 mm, when T ≤ 1.5 mm
                                        g < 0.4 x T, when 1.5 mm < T ≤ 3.0 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 < 1.5 x T, when T ≤ 2.5 mm
                                        R < 2.2 x T, when T > 2.5 mm
                                        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.

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