Profile Section
U180×84×4 mm Steel U Profile — S420GD+Z275
The 180x84x4mm steel U profile is a cold roll-formed plain channel: 180 mm web, 84 mm flanges and 4 mm thickness, 10.47 kg/m. Roll-formed to order in galvanized S420GD+Z275 steel, it is used as tracks, edge and closure channels and in general fabrication. This page shows the size in pre-galvanized strip S420GD+Z275: Z275 zinc coating (275 g/m² in total on both sides), minimum yield 420 MPa.
Made to Order — Roll Formed
This profile is roll-formed to order in your length (1–25 m). The minimum order is 5000 kg per size and material. Add your sizes to a quote request and we confirm lead time and price.
Add to Quote Request
Select length and quantity to add to your quote cart
Minimum order: 40 pieces
Minimum order: 5,000 kg per size
Optional made-to-order requirements — added to this line for our production team.
Applications & Usage
U 180x84x4 is used as top and bottom tracks in light steel framing, edge and closure channels for panels, guides and machine guards. Pre-galvanized strip is the usual choice for outdoor purlins, rails and solar mounting structures. Each size is roll-formed to order in lengths from 1 to 25 m. The minimum order is 5000 kg per size and material — add your sizes to a quote request and we confirm lead time and delivered price.
Technical Specifications
| Specification | Value |
|---|---|
| Dimensions | 180mm × 84mm × 4mm |
| Weight per Meter | 10.47 kg/m |
| Material | Steel |
| Alloy/Grade | S420GD+Z275 |
| Standard | EN 1090-1 (CE, EXC2); coated strip to EN 10346 |
| Profile Type | U (plain channel) |
| Developed Width | 333 mm |
| Cross-Section Area | 13.33 cm² |
| Moment of Inertia Iₓ | 676.5 cm⁴ |
| Section Modulus Wₑₗ,ₓ | 75.16 cm³ |
| Radius of Gyration rₓ | 7.10 cm |
| Moment of Inertia Iᵧ | 93.2 cm⁴ |
| Section Modulus Wₑₗ,ᵧ | 14.58 cm³ |
| Radius of Gyration rᵧ | 2.64 cm |
| Centroid Distance eₓ | 2.2 cm |
| Available Lengths | 6m, 12m |
| Standard Length | 6 m |
| Minimum Order per Size | 5 t |
| Cut-to-Length Range | 1000 – 25000 mm |
Weight and section properties are nominal values from the mill catalogue table. Values marked ≈ are calculated from the section centerline.
Indicative load span (single span, simply supported)
Allowable uniformly-distributed load (kN/m) limited by elastic bending about the strong axis (γ = 1.5 on yield, S420GD+Z275). Deflection is not checked and usually governs long spans. Indicative only — confirm with a project calculation.
| Span | Max UDL |
|---|---|
| 2 m | ≈ 42.09 kN/m |
| 3 m | ≈ 18.71 kN/m |
| 4 m | ≈ 10.52 kN/m |
| 5 m | ≈ 6.73 kN/m |
| 6 m | ≈ 4.68 kN/m |
Made to Order — Roll Formed
This profile is roll-formed to order in your length (1–25 m). The minimum order is 5000 kg per size and material. Add your sizes to a quote request and we confirm lead time and price.
Cut to exact length
Any length from 1 to 25 m — no offcut waste on site
Material options
Pre-galvanized steel strip S420GD+Z275 to EN 10346; the zinc coating is on the coil before roll forming.
In-line punching
Holes and slots punched to your drawing
Certified production
EN 1090-1 factory production control (CE, up to EXC2); ISO 9001
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