300×100×4 mm S420MC–S700MC High-Strength Rectangular Hollow Section
300x100x4mm Steel high-strength rectangular tube in S420MC, S500MC, S600MC, S700MC to EN 10219 / EN 10149-2, with an uncoated steel surface suitable for further processing or painting. Nominal weight 24.294 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 medium-duty Steel high-strength rectangular tube is commonly specified for furniture manufacturing, enclosures, brackets, and general fabrication. The 4mm wall thickness provides excellent strength-to-weight ratio while maintaining workability. The natural mill finish provides a cost-effective solution for applications where aesthetics are secondary. 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 | 300mm × 100mm × 4mm |
| Weight per Meter | 24.294 kg/m |
| Material | Steel |
| Alloy/Grade | S420MC, S500MC, S600MC, S700MC |
| Standard | EN 10219 / EN 10149-2 |
| 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) | 30.9 cm² |
| Second moment of area(Ix) | 3320 cm⁴ |
| Second moment of area(Iy) | 595 cm⁴ |
| Radius of gyration(ix) | 10.4 cm |
| Radius of gyration(iy) | 4.39 cm |
| Elastic section modulus(Wel,x) | 221 cm³ |
| Elastic section modulus(Wel,y) | 119 cm³ |
| Plastic section modulus(Wpl,x) | 283 cm³ |
| Plastic section modulus(Wpl,y) | 130 cm³ |
| Torsional inertia constant(It) | 1668 cm⁴ |
| Torsional modulus constant(Ct) | 216 cm³ |
| Surface area per metre(As) | 0.786 m²/m |
| Length per tonne | 41.2 m |
High-strength grades for this size
Strength and indicative capacity for each grade this size is rolled in, compared with the S355J2H wall that carries the same bending load in the same outer size.
| Grade | Min. yield ReH | Tensile Rm | Bending Wel·ReH | Axial A·ReH | S355J2H equivalent |
|---|---|---|---|---|---|
| S420MC | 420 MPa | 480–620 MPa | 93.0 kNm | 1300 kN | 5 mm · 30.1 kg/m (+24%) |
| S500MC | 500 MPa | 550–700 MPa | 111 kNm | 1547 kN | 6 mm · 35.8 kg/m (+47%) |
| S600MC | 600 MPa | 650–820 MPa | 133 kNm | 1857 kN | 8 mm · 46.5 kg/m (+91%) |
| S700MC | 700 MPa | 750–950 MPa | 155 kNm | 2166 kN | 10 mm · 57.0 kg/m (+134%) |
In S700MC, this section (24.3 kg/m) carries the elastic bending load of a 10 mm S355J2H wall in the same outer size (57.0 kg/m), which is 134% heavier per metre.
Indicative values from nominal dimensions: Wel × ReH and A × ReH, without buckling, cross-section class or partial safety factors. Not a design check.
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