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

Shapes
Shapes
Circular (mmin)
Dimensions
16 - 88.90.63 - 3.50
Shapes
Shapes
Square (mmin)
Dimensions
19x19 - 70x70
Shapes
Shapes
Rectangular (mmin)
Dimensions
25x15 - 100x40
Shapes
Shapes
Wall thickness (mmin)
Dimensions
0.9 - 3.00.04 - 0.12
Shapes
Shapes
Mill length (mm)
Dimensions
6000

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

Other shapes, sizes and lengths are available upon request.

Circular Dimensions

Outer diameter (mmin)
Outer diameter (mmin)
160.63
0.9 mm (kg/m)
0.335
1.0 mm (kg/m)
0.370
1.25 mm (kg/m)
0.455
1.5 mm (kg/m)
0.536
2.0 mm (kg/m)
0.691
2.5 mm (kg/m)
—
3.0 mm (kg/m)
—
Outer diameter (mmin)
Outer diameter (mmin)
180.71
0.9 mm (kg/m)
0.380
1.0 mm (kg/m)
0.419
1.25 mm (kg/m)
0.516
1.5 mm (kg/m)
0.610
2.0 mm (kg/m)
0.789
2.5 mm (kg/m)
—
3.0 mm (kg/m)
—
Outer diameter (mmin)
Outer diameter (mmin)
190.75
0.9 mm (kg/m)
0.402
1.0 mm (kg/m)
0.444
1.25 mm (kg/m)
0.547
1.5 mm (kg/m)
0.647
2.0 mm (kg/m)
0.838
2.5 mm (kg/m)
—
3.0 mm (kg/m)
—
Outer diameter (mmin)
Outer diameter (mmin)
200.79
0.9 mm (kg/m)
0.424
1.0 mm (kg/m)
0.469
1.25 mm (kg/m)
0.578
1.5 mm (kg/m)
0.684
2.0 mm (kg/m)
0.888
2.5 mm (kg/m)
—
3.0 mm (kg/m)
—
Outer diameter (mmin)
Outer diameter (mmin)
220.87
0.9 mm (kg/m)
0.468
1.0 mm (kg/m)
0.518
1.25 mm (kg/m)
0.640
1.5 mm (kg/m)
0.758
2.0 mm (kg/m)
0.986
2.5 mm (kg/m)
1.20
3.0 mm (kg/m)
—
Outer diameter (mmin)
Outer diameter (mmin)
250.98
0.9 mm (kg/m)
0.535
1.0 mm (kg/m)
0.592
1.25 mm (kg/m)
0.732
1.5 mm (kg/m)
0.869
2.0 mm (kg/m)
1.13
2.5 mm (kg/m)
1.39
3.0 mm (kg/m)
1.63
Outer diameter (mmin)
Outer diameter (mmin)
25.41.00
0.9 mm (kg/m)
0.544
1.0 mm (kg/m)
0.602
1.25 mm (kg/m)
0.744
1.5 mm (kg/m)
0.884
2.0 mm (kg/m)
1.15
2.5 mm (kg/m)
1.41
3.0 mm (kg/m)
1.66
Outer diameter (mmin)
Outer diameter (mmin)
281.1
0.9 mm (kg/m)
0.601
1.0 mm (kg/m)
0.666
1.25 mm (kg/m)
0.825
1.5 mm (kg/m)
0.980
2.0 mm (kg/m)
1.28
2.5 mm (kg/m)
1.57
3.0 mm (kg/m)
1.85
Outer diameter (mmin)
Outer diameter (mmin)
301.2
0.9 mm (kg/m)
0.646
1.0 mm (kg/m)
0.715
1.25 mm (kg/m)
0.886
1.5 mm (kg/m)
1.05
2.0 mm (kg/m)
1.38
2.5 mm (kg/m)
1.70
3.0 mm (kg/m)
2.00
Outer diameter (mmin)
Outer diameter (mmin)
321.3
0.9 mm (kg/m)
—
1.0 mm (kg/m)
0.765
1.25 mm (kg/m)
0.948
1.5 mm (kg/m)
1.13
2.0 mm (kg/m)
1.48
2.5 mm (kg/m)
1.82
3.0 mm (kg/m)
2.15
Outer diameter (mmin)
Outer diameter (mmin)
351.4
0.9 mm (kg/m)
—
1.0 mm (kg/m)
0.838
1.25 mm (kg/m)
1.04
1.5 mm (kg/m)
1.24
2.0 mm (kg/m)
1.63
2.5 mm (kg/m)
2.00
3.0 mm (kg/m)
2.37
Outer diameter (mmin)
Outer diameter (mmin)
381.5
0.9 mm (kg/m)
—
1.0 mm (kg/m)
0.912
1.25 mm (kg/m)
1.13
1.5 mm (kg/m)
1.35
2.0 mm (kg/m)
1.78
2.5 mm (kg/m)
2.19
3.0 mm (kg/m)
2.59
Outer diameter (mmin)
Outer diameter (mmin)
401.6
0.9 mm (kg/m)
—
1.0 mm (kg/m)
0.962
1.25 mm (kg/m)
1.20
1.5 mm (kg/m)
1.42
2.0 mm (kg/m)
1.87
2.5 mm (kg/m)
2.31
3.0 mm (kg/m)
2.74
Outer diameter (mmin)
Outer diameter (mmin)
411.6
0.9 mm (kg/m)
—
1.0 mm (kg/m)
0.990
1.25 mm (kg/m)
1.22
1.5 mm (kg/m)
1.46
2.0 mm (kg/m)
1.92
2.5 mm (kg/m)
2.37
3.0 mm (kg/m)
2.81
Outer diameter (mmin)
Outer diameter (mmin)
41.51.63
0.9 mm (kg/m)
—
1.0 mm (kg/m)
0.999
1.25 mm (kg/m)
1.24
1.5 mm (kg/m)
1.48
2.0 mm (kg/m)
1.95
2.5 mm (kg/m)
2.40
3.0 mm (kg/m)
2.85
Outer diameter (mmin)
Outer diameter (mmin)
44.51.75
0.9 mm (kg/m)
—
1.0 mm (kg/m)
1.07
1.25 mm (kg/m)
1.33
1.5 mm (kg/m)
1.59
2.0 mm (kg/m)
2.10
2.5 mm (kg/m)
2.59
3.0 mm (kg/m)
3.07
Outer diameter (mmin)
Outer diameter (mmin)
481.9
0.9 mm (kg/m)
—
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.44
1.5 mm (kg/m)
1.72
2.0 mm (kg/m)
2.27
2.5 mm (kg/m)
2.81
3.0 mm (kg/m)
3.33
Outer diameter (mmin)
Outer diameter (mmin)
502.0
0.9 mm (kg/m)
—
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.50
1.5 mm (kg/m)
1.79
2.0 mm (kg/m)
2.37
2.5 mm (kg/m)
2.93
3.0 mm (kg/m)
3.48
Outer diameter (mmin)
Outer diameter (mmin)
50.82.00
0.9 mm (kg/m)
—
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.53
1.5 mm (kg/m)
1.82
2.0 mm (kg/m)
2.41
2.5 mm (kg/m)
2.98
3.0 mm (kg/m)
3.54
Outer diameter (mmin)
Outer diameter (mmin)
552.2
0.9 mm (kg/m)
—
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.66
1.5 mm (kg/m)
1.98
2.0 mm (kg/m)
2.61
2.5 mm (kg/m)
3.24
3.0 mm (kg/m)
3.85
Outer diameter (mmin)
Outer diameter (mmin)
572.2
0.9 mm (kg/m)
—
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.72
1.5 mm (kg/m)
2.05
2.0 mm (kg/m)
2.71
2.5 mm (kg/m)
3.36
3.0 mm (kg/m)
4.00
Outer diameter (mmin)
Outer diameter (mmin)
602.4
0.9 mm (kg/m)
—
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.81
1.5 mm (kg/m)
2.16
2.0 mm (kg/m)
2.86
2.5 mm (kg/m)
3.55
3.0 mm (kg/m)
4.22
Outer diameter (mmin)
Outer diameter (mmin)
702.8
0.9 mm (kg/m)
—
1.0 mm (kg/m)
—
1.25 mm (kg/m)
—
1.5 mm (kg/m)
2.53
2.0 mm (kg/m)
3.35
2.5 mm (kg/m)
4.16
3.0 mm (kg/m)
4.96
Outer diameter (mmin)
Outer diameter (mmin)
76.13.00
0.9 mm (kg/m)
—
1.0 mm (kg/m)
—
1.25 mm (kg/m)
—
1.5 mm (kg/m)
2.76
2.0 mm (kg/m)
3.65
2.5 mm (kg/m)
4.54
3.0 mm (kg/m)
5.41
Outer diameter (mmin)
Outer diameter (mmin)
88.93.50
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)
4.29
2.5 mm (kg/m)
5.33
3.0 mm (kg/m)
6.36

Square Dimensions

Height x Width (mm)
Height x Width (mm)
19 x 19
1.0 mm (kg/m)
0.564
1.25 mm (kg/m)
0.694
1.5 mm (kg/m)
0.820
2.0 mm (kg/m)
1.06
2.5 mm (kg/m)
—
3.0 mm (kg/m)
—
Height x Width (mm)
Height x Width (mm)
20 x 20
1.0 mm (kg/m)
0.595
1.25 mm (kg/m)
0.733
1.5 mm (kg/m)
0.868
2.0 mm (kg/m)
1.12
2.5 mm (kg/m)
—
3.0 mm (kg/m)
—
Height x Width (mm)
Height x Width (mm)
25 x 25
1.0 mm (kg/m)
0.752
1.25 mm (kg/m)
0.930
1.5 mm (kg/m)
1.10
2.0 mm (kg/m)
1.44
2.5 mm (kg/m)
1.76
3.0 mm (kg/m)
—
Height x Width (mm)
Height x Width (mm)
30 x 30
1.0 mm (kg/m)
0.909
1.25 mm (kg/m)
1.13
1.5 mm (kg/m)
1.34
2.0 mm (kg/m)
1.75
2.5 mm (kg/m)
2.15
3.0 mm (kg/m)
2.39
Height x Width (mm)
Height x Width (mm)
32 x 32
1.0 mm (kg/m)
0.972
1.25 mm (kg/m)
1.20
1.5 mm (kg/m)
1.43
2.0 mm (kg/m)
1.88
2.5 mm (kg/m)
2.31
3.0 mm (kg/m)
2.58
Height x Width (mm)
Height x Width (mm)
35 x 35
1.0 mm (kg/m)
1.07
1.25 mm (kg/m)
1.32
1.5 mm (kg/m)
1.57
2.0 mm (kg/m)
2.07
2.5 mm (kg/m)
2.54
3.0 mm (kg/m)
2.86
Height x Width (mm)
Height x Width (mm)
40 x 40
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.52
1.5 mm (kg/m)
1.81
2.0 mm (kg/m)
2.38
2.5 mm (kg/m)
2.93
3.0 mm (kg/m)
3.33
Height x Width (mm)
Height x Width (mm)
50 x 50
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.91
1.5 mm (kg/m)
2.28
2.0 mm (kg/m)
3.01
2.5 mm (kg/m)
3.72
3.0 mm (kg/m)
4.28
Height x Width (mm)
Height x Width (mm)
60 x 60
1.0 mm (kg/m)
—
1.25 mm (kg/m)
—
1.5 mm (kg/m)
2.75
2.0 mm (kg/m)
3.64
2.5 mm (kg/m)
4.50
3.0 mm (kg/m)
5.22
Height x Width (mm)
Height x Width (mm)
70 x 70
1.0 mm (kg/m)
—
1.25 mm (kg/m)
—
1.5 mm (kg/m)
—
2.0 mm (kg/m)
4.26
2.5 mm (kg/m)
5.29
3.0 mm (kg/m)
6.16

Rectangular Dimensions

Height x Width (mm)
Height x Width (mm)
25 x 15
1.0 mm (kg/m)
0.595
1.25 mm (kg/m)
0.733
1.5 mm (kg/m)
0.868
2.0 mm (kg/m)
1.12
2.5 mm (kg/m)
—
3.0 mm (kg/m)
—
Height x Width (mm)
Height x Width (mm)
30 x 10
1.0 mm (kg/m)
0.595
1.25 mm (kg/m)
0.733
1.5 mm (kg/m)
0.868
2.0 mm (kg/m)
1.12
2.5 mm (kg/m)
—
3.0 mm (kg/m)
—
Height x Width (mm)
Height x Width (mm)
30 x 15
1.0 mm (kg/m)
0.673
1.25 mm (kg/m)
0.831
1.5 mm (kg/m)
0.985
2.0 mm (kg/m)
1.28
2.5 mm (kg/m)
—
3.0 mm (kg/m)
—
Height x Width (mm)
Height x Width (mm)
30 x 20
1.0 mm (kg/m)
0.752
1.25 mm (kg/m)
0.930
1.5 mm (kg/m)
1.10
2.0 mm (kg/m)
1.44
2.5 mm (kg/m)
1.76
3.0 mm (kg/m)
—
Height x Width (mm)
Height x Width (mm)
30 x 25
1.0 mm (kg/m)
0.830
1.25 mm (kg/m)
1.03
1.5 mm (kg/m)
1.22
2.0 mm (kg/m)
1.59
2.5 mm (kg/m)
1.95
3.0 mm (kg/m)
—
Height x Width (mm)
Height x Width (mm)
35 x 15
1.0 mm (kg/m)
0.752
1.25 mm (kg/m)
0.930
1.5 mm (kg/m)
1.10
2.0 mm (kg/m)
1.44
2.5 mm (kg/m)
1.76
3.0 mm (kg/m)
—
Height x Width (mm)
Height x Width (mm)
35 x 20
1.0 mm (kg/m)
0.830
1.25 mm (kg/m)
1.03
1.5 mm (kg/m)
1.22
2.0 mm (kg/m)
1.59
2.5 mm (kg/m)
1.95
3.0 mm (kg/m)
2.16
Height x Width (mm)
Height x Width (mm)
40 x 20
1.0 mm (kg/m)
0.909
1.25 mm (kg/m)
1.13
1.5 mm (kg/m)
1.34
2.0 mm (kg/m)
1.75
2.5 mm (kg/m)
2.15
3.0 mm (kg/m)
2.39
Height x Width (mm)
Height x Width (mm)
40 x 25
1.0 mm (kg/m)
0.987
1.25 mm (kg/m)
1.22
1.5 mm (kg/m)
1.46
2.0 mm (kg/m)
1.91
2.5 mm (kg/m)
2.34
3.0 mm (kg/m)
2.63
Height x Width (mm)
Height x Width (mm)
40 x 30
1.0 mm (kg/m)
1.07
1.25 mm (kg/m)
1.32
1.5 mm (kg/m)
1.57
2.0 mm (kg/m)
2.07
2.5 mm (kg/m)
2.54
3.0 mm (kg/m)
2.86
Height x Width (mm)
Height x Width (mm)
50 x 20
1.0 mm (kg/m)
1.07
1.25 mm (kg/m)
1.32
1.5 mm (kg/m)
1.57
2.0 mm (kg/m)
2.07
2.5 mm (kg/m)
2.54
3.0 mm (kg/m)
2.86
Height x Width (mm)
Height x Width (mm)
50 x 25
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.42
1.5 mm (kg/m)
1.69
2.0 mm (kg/m)
2.22
2.5 mm (kg/m)
2.74
3.0 mm (kg/m)
3.10
Height x Width (mm)
Height x Width (mm)
50 x 30
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.52
1.5 mm (kg/m)
1.81
2.0 mm (kg/m)
2.38
2.5 mm (kg/m)
2.93
3.0 mm (kg/m)
3.33
Height x Width (mm)
Height x Width (mm)
50 x 40
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.71
1.5 mm (kg/m)
2.05
2.0 mm (kg/m)
2.69
2.5 mm (kg/m)
3.33
3.0 mm (kg/m)
3.80
Height x Width (mm)
Height x Width (mm)
60 x 20
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.52
1.5 mm (kg/m)
1.81
2.0 mm (kg/m)
2.38
2.5 mm (kg/m)
2.93
3.0 mm (kg/m)
3.33
Height x Width (mm)
Height x Width (mm)
60 x 30
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.71
1.5 mm (kg/m)
2.05
2.0 mm (kg/m)
2.69
2.5 mm (kg/m)
3.33
3.0 mm (kg/m)
3.80
Height x Width (mm)
Height x Width (mm)
60 x 40
1.0 mm (kg/m)
—
1.25 mm (kg/m)
1.91
1.5 mm (kg/m)
2.28
2.0 mm (kg/m)
3.01
2.5 mm (kg/m)
3.72
3.0 mm (kg/m)
4.28
Height x Width (mm)
Height x Width (mm)
70 x 25
1.0 mm (kg/m)
—
1.25 mm (kg/m)
—
1.5 mm (kg/m)
2.16
2.0 mm (kg/m)
2.85
2.5 mm (kg/m)
3.52
3.0 mm (kg/m)
4.04
Height x Width (mm)
Height x Width (mm)
70 x 30
1.0 mm (kg/m)
—
1.25 mm (kg/m)
—
1.5 mm (kg/m)
2.28
2.0 mm (kg/m)
3.01
2.5 mm (kg/m)
3.72
3.0 mm (kg/m)
4.28
Height x Width (mm)
Height x Width (mm)
70 x 50
1.0 mm (kg/m)
—
1.25 mm (kg/m)
—
1.5 mm (kg/m)
2.75
2.0 mm (kg/m)
3.64
2.5 mm (kg/m)
4.50
3.0 mm (kg/m)
5.22
Height x Width (mm)
Height x Width (mm)
80 x 20
1.0 mm (kg/m)
—
1.25 mm (kg/m)
—
1.5 mm (kg/m)
2.28
2.0 mm (kg/m)
3.01
2.5 mm (kg/m)
3.72
3.0 mm (kg/m)
4.28
Height x Width (mm)
Height x Width (mm)
80 x 30
1.0 mm (kg/m)
—
1.25 mm (kg/m)
—
1.5 mm (kg/m)
2.52
2.0 mm (kg/m)
3.32
2.5 mm (kg/m)
4.11
3.0 mm (kg/m)
4.74
Height x Width (mm)
Height x Width (mm)
80 x 40
1.0 mm (kg/m)
—
1.25 mm (kg/m)
—
1.5 mm (kg/m)
2.75
2.0 mm (kg/m)
3.64
2.5 mm (kg/m)
4.50
3.0 mm (kg/m)
5.22
Height x Width (mm)
Height x Width (mm)
80 x 60
1.0 mm (kg/m)
—
1.25 mm (kg/m)
—
1.5 mm (kg/m)
—
2.0 mm (kg/m)
4.26
2.5 mm (kg/m)
5.29
3.0 mm (kg/m)
6.16
Height x Width (mm)
Height x Width (mm)
100 x 40
1.0 mm (kg/m)
—
1.25 mm (kg/m)
—
1.5 mm (kg/m)
—
2.0 mm (kg/m)
4.26
2.5 mm (kg/m)
5.29
3.0 mm (kg/m)
6.16

Mechanical Properties

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

Typical mechanical properties when quenched to water:

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

Chemical Composition (ladle analysis)

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

Tolerances

Tolerance Circular

Characteristic
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
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
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
Characteristic
Straightness
Circular precision tubes
Tolerances meet or exceed the requirements of EN 10305-3
Maximum 0.15% of measured length
Characteristic
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
Characteristic
Mill length
Circular precision tubes
Tolerances meet or exceed the requirements of EN 10305-3
0/+50 mm, standard length 6000 mm
Characteristic
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
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

Characteristic
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
Characteristic
Side concavity and convexity
Square precision tubes
Tolerances meet or exceed the requirements of EN 10305-5
Included in outside dimension tolerance
Characteristic
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
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
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
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
Characteristic
Squareness of side
Square precision tubes
Tolerances meet or exceed the requirements of EN 10305-5
90° ±1°
Characteristic
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
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
Characteristic
Mill length
Square precision tubes
Tolerances meet or exceed the requirements of EN 10305-5
0/+50 mm, standard length 6000 mm
Characteristic
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
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

Characteristic
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
Characteristic
Side concavity and convexity
Rectangular precision tubes
Tolerances meet or exceed the requirements of EN 10305-5
Included in outside dimension tolerance
Characteristic
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
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
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
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
Characteristic
Squareness of side
Rectangular precision tubes
Tolerances meet or exceed the requirements of EN 10305-5
90° ±1°
Characteristic
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
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
Characteristic
Mill length
Rectangular precision tubes
Tolerances meet or exceed the requirements of EN 10305-5
0/+50 mm, standard length 6000 mm
Characteristic
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
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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