400×400×6.3 mm S235JRH Steel Square Hollow Section
400x400x6.3mm cold-formed ERW square hollow section to EN 10219, rolled in S235JRH, S275J0H or S355J2H depending on size, supplied with a primer-coated surface optimised for paint adhesion.
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: 11 pieces
Minimum order: 10 t per size (from 5 t if the size is in production)
Applications & Usage
Equal sides carry load about both axes, so this square hollow section is specified for columns, posts, gates, and frames, and the closed section resists torsion better than an open profile of similar weight. Supplied black, with a red-oxide shop primer, or hot-dip galvanized; the internal weld bead can be removed on request on most sizes.
Technical Specifications
| Specification | Value |
|---|---|
| Dimensions | 400mm × 400mm × 6.3mm |
| Weight per Meter | 76.812 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) | 97.8 cm² |
| Second moment of area(I) | 25096 cm⁴ |
| Radius of gyration(i) | 16.0 cm |
| Elastic section modulus(Wel) | 1255 cm³ |
| Plastic section modulus(Wpl) | 1438 cm³ |
| Torsional inertia constant(It) | 38925 cm⁴ |
| Torsional modulus constant(Ct) | 1892 cm³ |
| Surface area per metre(As) | 1.57 m²/m |
| Length per tonne | 13.0 m |
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