Hybox®
Hybox® is a cold formed, high-grade multi-purpose hollow section, offering trusted formability and toughness. It is batch-tested for your assurance and perfect for projects where you require guaranteed minimum strength and mechanical properties. It can be used in a wide range of structural and engineering applications, including all those where specific properties and compliance with design codes are required.
Hybox® fully complies with the European Standard for cold formed structural hollow sections, EN10219 S355 J2H and is used in a wide range of construction and mechanical related applications including wind bracing and machinery.
EN-Construction-Product-Hybox cold formed high-grade hollow sections-default
EN-Construction-Product-Hybox cold formed high-grade hollow sections | Key product features
Hybox® 355 - Cold formed structural hollow section
Key product features:
- Excellent quality, made with steel from a high quality production process
- Minimum strength of 355 N/mm2
- Properties suitable for low temperature applications (27J @ -20°C)
- Dimensional consistency and corner radius controlled
- High levels of formability and, because the steel is fully-killed, excellent weldability
- Suitable for applications demanding specific properties
- Suitable for structural applications and fully compliant with design codes
- Batch-tested to give the properties of the specific delivered material; full test certification supplied
- Clearly marked as Hybox 355, with the reassurance of batch traceability
- Specific technical support available
- Excellent supply availability through approved stockholders
- All Hybox 355 material is CE marked and is fully compliant with the Construction Products Regulation (CPR)
- Suitable for galvanising
EN-Construction-Product-Hybox cold formed high-grade hollow sections | Mechanical properties
| Yield strength | Tensile strength | Elongation % min | Impact strength | Carbon equivalent | ||
|---|---|---|---|---|---|---|
| ReH min N/mm2 | Rm min N/mm2 | L0 = 5,65 √S0 specimen | 10mm x 10mm | (CEV) max | ||
| T≤16mm | T < 3mm | 3mm≤T≤40mm | T ≤ 40mm | ºC | J | |
| 355 | 510-680 | 470 - 630 | 20 | -20* | 27 | 0.45 |
For section sizes D/T < 15 (circular) and (B+H)/ 2T < 12.5 (square/rectangle) min elongation is reduced by 2%.
Chemical composition
% by mass
| C | Si | Mn | P | S |
|---|---|---|---|---|
| 0.22 | 0.55 | 1.60 | 0.030 | 0.030 |
Hybox® 355 is produced from fully killed steel - critical to formability and weldability.
EN-Construction-Product-Tubes-Hybox-Dimensional tolerancesTSE
Dimensional capability
Hybox® 355 are available in sizes from 26.9 x 2.0 OD up to and including 508.0 x 16 OD in our circular hollow sections range and from 25 x 25 x 2.0 up to and including 300 x 300 x 12.5 and the equivalent rectangles in our rectangular hollow section range.
Hybox 355 is supplied with a test report 3.1 to EN10204. Standard lengths are 7.5 metres and 12.0 metres, with special mill lengths from 6 metres up to 18m available by arrangement.
Further details of specific size and grade combinations are available upon request.
Dimensional tolerances
Dimensional tolerances are in accordance with EN10219: Part 2
| Circular | Square / Rectangular - Side length (mm) | Square / Rectangular - Tolerance | |
|---|---|---|---|
| Outside dimension (D B and H) | ±1% with a min of ±0.50mm and a max of ±10mm | H,B < 100 100 ≤ H,B ≤ 200 H, B > 200 | ±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) | For D > 406.4mm ±10% with a max of ±2mm 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 T > 10.0 | 1.6T to 2.4T 2.0T to 3.0T 2.4T to 3.6T |
| 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 | |
| Length | -0 +50mm | -0 +50mm | |
EN-Construction-Product-Hybox cold formed high-grade hollow sections | Declaration of Performance
Download Declaration of Performance (DoP) below:
EN-Construction-Approval_or_Certificate-Hybox 420MH Declaration of Performance
Hybox® 420MH declaration of performance
EN-Construction-Product-Hybox cold formed high-grade hollow sections-downloads
Downloads
EN-Construction-Approval_or_Certificate-Hybox 420MH Declaration of Performance
Hybox® 420MH declaration of performance
EN-EngineeringConstruction-Datasheet-Hybox® S500MH
Hybox S500MH - Data sheet
EN-EngineeringConstruction-Datasheet-Hybox® S700MH
Hybox S700MH - Data sheet
EN-ConstructionEngineering-Download-EPD-Tata Steel Structural hollow sections
Tata Steel EPD structural hollow sections
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Celsius® hot finished hollow sections
Celsius® is our range of fully normalized hot finished hollow sections to EN 10210.
EN-Construction-Product-Strongbox cold formed hollow sections TSUK
Strongbox® cold formed hollow sections
Strongbox® fully complies with the dimensional tolerances of the European standard for cold formed hollow sections, EN10219.
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