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.

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

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, bundle 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, single 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
Concavity/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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