SSAB Boron Tube 24

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General Product Description

SSAB Boron Tube 24 is a structural hollow section 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 24 is available at circular.

Shapes
Shapes
Circular (mmin)
Dimensions
139.7 - 323.95.500 - 12.75
Shapes
Shapes
Wall thickness (mmin)
Dimensions
5.0 - 10.00.20 - 0.394
Shapes
Shapes
Mill length (mm)
Dimensions
6000/12000

Other shapes, sizes and lengths are available upon request.

Circular Dimensions

Outer diameter (mmin)
Outer diameter (mmin)
139.75.500
5.0 mm (kg/m)
—
6.0 mm (kg/m)
19.8
8.0 mm (kg/m)
—
10.0 mm (kg/m)
—
Outer diameter (mmin)
Outer diameter (mmin)
168.36.626
5.0 mm (kg/m)
—
6.0 mm (kg/m)
24.0
8.0 mm (kg/m)
—
10.0 mm (kg/m)
—
Outer diameter (mmin)
Outer diameter (mmin)
219.18.626
5.0 mm (kg/m)
26.4
6.0 mm (kg/m)
31.5
8.0 mm (kg/m)
41.7
10.0 mm (kg/m)
51.6
Outer diameter (mmin)
Outer diameter (mmin)
27310.7
5.0 mm (kg/m)
—
6.0 mm (kg/m)
39.5
8.0 mm (kg/m)
52.3
10.0 mm (kg/m)
—
Outer diameter (mmin)
Outer diameter (mmin)
323.912.75
5.0 mm (kg/m)
—
6.0 mm (kg/m)
47.0
8.0 mm (kg/m)
62.3
10.0 mm (kg/m)
—

Mechanical Properties

Condition
Condition
As delivered
Typical yield strength
(MPa), not guaranteed
470
Typical tensile strength
(MPa), not guaranteed
650
Typical Elongation A (%),
not guaranteed
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 %)
0.27
Si
(max %)
0.30
Mn
(max %)
1.20
S
(max %)
0.010
Cr
(max %)
0.40
B
(max %)
0.0050
P
(max %)
0.020

Tolerances

Tolerance Circular

Characteristic
Characteristic
Outside diameter (D)
Circular hollow sections
Tolerances meet or exceed the requirements of EN 10219
±1%, with a minimum of ±0.5 mm and a maximum of ±10 mm
Characteristic
Characteristic
Out-of-roundness
Circular hollow sections
Tolerances meet or exceed the requirements of EN 10219
2%, when D/T ≤ 100
Characteristic
Characteristic
Thickness (T)
Circular hollow sections
Tolerances meet or exceed the requirements of EN 10219
When D ≤ 323.9 mm: -5%/+10%, with a minimum of ±0.2 mm and maximum ±0.5 mm.
When 355.6 ≤ D ≤ 406.4 mm : ±10%, when T ≤ 5 mm / ±0.5 mm, when T > 5 mm.
When D > 406.4 mm : ±10%, with a maximum of ±2 mm.
Characteristic
Characteristic
Straightness
Circular hollow sections
Tolerances meet or exceed the requirements of EN 10219
0.20% of total length and 3 mm over any 1 m length
Characteristic
Characteristic
Mass per unit length
Circular hollow sections
Tolerances meet or exceed the requirements of EN 10219
Individual tube: ±6%
Characteristic
Characteristic
Mill length
Circular hollow sections
Tolerances meet or exceed the requirements of EN 10219
0/+50 mm, 6000 ≤ L ≤ 12000 - 18000 mm (standard lengths 6000 & 12000 mm)
Characteristic
Characteristic
Exact length
Circular hollow sections
Tolerances meet or exceed the requirements of EN 10219
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.

Contact Information

www.ssab.com/contact