400×300×12.5 mm S235JRH Steel Rectangular Hollow Section
400x300x12.5mm Steel rectangular hollow section in S235JRH, S275J0H, S355J2H to EN 10219, with a primer-coated surface optimised for paint adhesion. Nominal weight 127.204 kg/m.
Minimum order
Minimum 10 t per size. If the size is already in the current production cycle, we can accept orders from 5 t. Standard length 6 m; 4–12 m on request. We confirm the minimum, lead time and grade in your quote.
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Minimum order: 7 pieces
Minimum order: 10 t per size (from 5 t if the size is in production)
Applications & Usage
This extra heavy-duty industrial Steel rectangular hollow section is commonly specified for heavy structural supports, load-bearing frames, and demanding industrial applications. The 12.5mm wall thickness provides exceptional structural integrity while maintaining workability. The applied finish enhances both durability and appearance. Available in standard lengths of 6m, this profile can be easily cut, drilled, and welded to suit your specific requirements.
Technical Specifications
| Specification | Value |
|---|---|
| Dimensions | 400mm × 300mm × 12.5mm |
| Weight per Meter | 127.204 kg/m |
| Material | Steel |
| Alloy/Grade | S235JRH, S275J0H, S355J2H |
| Standard | EN 10219 |
| Finish | Primer Coated |
| Standard Length | 6m |
| Minimum Order per Size | 10 t |
| Cut-to-Length Range | 4000 – 12000 mm |
Section Properties
Nominal values calculated from nominal dimensions to EN 10219-2.
| Property | Value |
|---|---|
| Cross-sectional area(A) | 162 cm² |
| Second moment of area(Ix) | 36489 cm⁴ |
| Second moment of area(Iy) | 23517 cm⁴ |
| Radius of gyration(ix) | 15.0 cm |
| Radius of gyration(iy) | 12.0 cm |
| Elastic section modulus(Wel,x) | 1824 cm³ |
| Elastic section modulus(Wel,y) | 1568 cm³ |
| Plastic section modulus(Wpl,x) | 2198 cm³ |
| Plastic section modulus(Wpl,y) | 1810 cm³ |
| Torsional inertia constant(It) | 47237 cm⁴ |
| Torsional modulus constant(Ct) | 2580 cm³ |
| Surface area per metre(As) | 1.34 m²/m |
| Length per tonne | 7.86 m |
Grade strength and capacity
Minimum strength of each grade this size is rolled in, with the indicative capacity of the section.
| Grade | Min. yield | Tensile | Bending Wel·fy | Axial A·fy |
|---|---|---|---|---|
| S235JRH | 235 MPa | 360–510 MPa | 429 kNm | 3808 kN |
| S275J0H | 275 MPa | 410–560 MPa | 502 kNm | 4456 kN |
| S355J2H | 355 MPa | 470–630 MPa | 648 kNm | 5753 kN |
Ordered in S355J2H, the S235JRH bending capacity of this size is reached with a 8 mm wall in the same outer size (84.2 kg/m, 34% lighter).
Indicative values from nominal dimensions: Wel × fy and A × fy, without buckling, cross-section class or partial safety factors. Not a design check.
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