Strongbox® cold formed hollow sections
Strongbox® fully complies with the dimensional tolerances of the European standard for cold formed hollow sections, EN10219.
US_EN-Construction-Product-Strongbox cold formed hollow sections-default
US_EN-Construction-Product-Strongbox cold formed hollow sections | Key product features
General hollow sections - Strongbox® 235
Key features
- Excellent quality, made with steel from a high quality production process
- Minimum strength of 235 MPa
- High levels of formability and, because the steel is fully-killed, excellent weldability
- Product subject to non-specific inspection and testing; with test report supplied
- Excellent consistent dimensional tolerances
- Excellent supply availability through approved stockholders
- Suitable for galvanising
US_EN-Construction-Product-Strongbox cold formed hollow sections | Mechanical properties
Yield strength
ReH min N/mm2
T≤16mm
235
Strongbox® 235 hollow sections EN10219 S235JRH are subject to non-specific inspection and testing and are supplied with a test report type 2.2 to EN10204.
EN_US-Construction-Product-Tubes-Strongbox-Dimensional tolerancesTSE
Circular | Square/Rectangular | ||
---|---|---|---|
Outside dimension (D B and H) |
±1% with a min of ±0.50mm and a max of ±10mm |
Side length (mm) H,B < 100 100 ≤ H,B H,B > 200 |
Tolerance ±1% with a min of ±0.5mm ±0.8% ±0.6% |
Thickness (T) | For D≤406.4mm T ≤ 5mm ±10% T > 5mm ±0.50mm |
T ≤ 5mm T > 5mm |
± 10% ±0.50mm |
Out of roundness (O) | 2% for D/T < 100, where D/T ≥ 100 out-of-roundness tolerance to be agreed |
- | |
Concavity/Convexity (independent tolerance on outside dimensions) |
- | Max 0.8% with a min of 0.5mm | |
Squareness of side | - | 90º ± 1 | |
External corner profile (radius need not be tangential to the sides) EN10219: Part 2 Table 3 |
- | T ≤ 6.0 6.0 < T ≤10.0 |
1.6T to 2.4T 2.0T to 3.0T |
Twist (V) | - | 2mm plus 0.5mm/m length | |
Straightness | 0.20% of total length & 3mm over any 1m length |
0.15% of total length & 3mm over any 1m length |
|
Mass (M) ±6% on individual lengths |
±6% on individual lengths | ±6% on individual lengths |
|
Length -0 +50mm | -0 +50mm | -0 +50mm |
US_EN-Construction-Product-Strongbox cold formed hollow sections | Declaration of Performance
Download Strongbox 235 JRH Declaration of Performance document below:
US_EN-Construction-Product-Strongbox cold formed hollow sections-downloads
Downloads: