400×300×8 mm S235JRH Steel Rectangular Hollow Section
400x300x8mm Steel rectangular hollow section in S235JRH, S275J0H, S355J2H to EN 10219, with a primer-coated surface optimised for paint adhesion. Nominal weight 84.185 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: 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 8mm 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 × 8mm |
| Weight per Meter | 84.185 kg/m |
| Material | Steel |
| Alloy/Grade | S235JRH, S275J0H, S355J2H |
| Standard | EN 10219 |
| Finish | Primer Coated |
| Standard Length | 6m |
| Internal Weld Removal | Available on request |
| 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) | 107 cm² |
| Second moment of area(Ix) | 25122 cm⁴ |
| Second moment of area(Iy) | 16212 cm⁴ |
| Radius of gyration(ix) | 15.3 cm |
| Radius of gyration(iy) | 12.3 cm |
| Elastic section modulus(Wel,x) | 1256 cm³ |
| Elastic section modulus(Wel,y) | 1081 cm³ |
| Plastic section modulus(Wpl,x) | 1487 cm³ |
| Plastic section modulus(Wpl,y) | 1224 cm³ |
| Torsional inertia constant(It) | 31179 cm⁴ |
| Torsional modulus constant(Ct) | 1747 cm³ |
| Surface area per metre(As) | 1.37 m²/m |
| Length per tonne | 11.9 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 | 295 kNm | 2520 kN |
| S275J0H | 275 MPa | 410–560 MPa | 345 kNm | 2949 kN |
| S355J2H | 355 MPa | 470–630 MPa | 446 kNm | 3807 kN |
Ordered in S355J2H, the S235JRH bending capacity of this size is reached with a 6 mm wall in the same outer size (64.1 kg/m, 24% lighter).
Indicative values from nominal dimensions: Wel × fy and A × fy, without buckling, cross-section class or partial safety factors. Not a design check.
This size is also rolled in high-strength steel: S420MC–S700MC version →
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