200×120×6 mm S420MC–S700MC High-Strength Rectangular Hollow Section
200x120x6mm 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 28.286 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 heavy-duty structural Steel high-strength rectangular tube is commonly specified for framework, support structures, machinery bases, and industrial equipment. The 6mm wall thickness provides superior load-bearing capacity 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 | 200mm × 120mm × 6mm |
| Weight per Meter | 28.286 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) | 36.0 cm² |
| Second moment of area(Ix) | 1929 cm⁴ |
| Second moment of area(Iy) | 874 cm⁴ |
| Radius of gyration(ix) | 7.32 cm |
| Radius of gyration(iy) | 4.93 cm |
| Elastic section modulus(Wel,x) | 193 cm³ |
| Elastic section modulus(Wel,y) | 146 cm³ |
| Plastic section modulus(Wpl,x) | 237 cm³ |
| Plastic section modulus(Wpl,y) | 166 cm³ |
| Torsional inertia constant(It) | 1947 cm⁴ |
| Torsional modulus constant(Ct) | 245 cm³ |
| Surface area per metre(As) | 0.619 m²/m |
| Length per tonne | 35.4 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 | 81.0 kNm | 1513 kN | 8 mm · 36.5 kg/m (+29%) |
| S500MC | 500 MPa | 550–700 MPa | 96.5 kNm | 1802 kN | 10 mm · 44.4 kg/m (+57%) |
| S600MC | 600 MPa | 650–820 MPa | 116 kNm | 2162 kN | Beyond the S355J2H range of this size |
| S700MC | 700 MPa | 750–950 MPa | 135 kNm | 2522 kN | Beyond the S355J2H range of this size |
In S500MC, this section (28.3 kg/m) carries the elastic bending load of a 10 mm S355J2H wall in the same outer size (44.4 kg/m), which is 57% heavier per metre. In S700MC, this section carries more elastic bending load than any S355J2H wall rolled in the same outer size; matching it in S355 needs a larger section.
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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