Buy our 304 stainless steel square bar in full 3m lengths - grade 304 (1.4307), a corrosion-resistant austenitic stainless — also called stainless square bar or 304 square steel bar — ideal for fabrication, architectural, marine, food-industry and structural use. Available cut to size on request with fast UK delivery.
Stainless Steel Square Bar Sizes & Weight Chart
304 stainless steel square bar size chart with approximate weight per metre. All bar in 3m lengths or cut to size.
| Size | Approx. weight (kg/m) |
|---|---|
| 6 x 6mm | 0.29 |
| 8 x 8mm | 0.51 |
| 10 x 10mm | 0.80 |
| 12 x 12mm | 1.15 |
| 16 x 16mm | 2.05 |
| 20 x 20mm | 3.20 |
| 25 x 25mm | 5.00 |
Popular stainless steel square bar sizes include 8mm, 10mm, 12mm and 20mm stainless square bar for balustrades, brackets and architectural fabrication. Weights are approximate, calculated at 8,000 kg/m³ — for any size use our metal weight calculator.
Rackerman is a UK metal supplier: buy 304 stainless steel square bar — also known as stainless square bar or 304 square steel bar — online with fast mainland UK delivery and cut-to-size service, a convenient alternative to a local stainless stockholder near you.
Key Features
- Grade 304 (1.4307) stainless steel - excellent corrosion resistance
- Solid square section in full 3m lengths, cut to size on request
- Sizes from 6mm to 25mm
- Strong, hygienic and easy to clean - ideal for food, marine and architectural use
- Weldable and fabricable with appropriate stainless techniques
- Suitable for indoor and outdoor use, including coastal and wet environments
About Grade 304 Stainless Steel
304 (1.4307) is the most widely used austenitic stainless steel, offering excellent corrosion resistance, strength and a clean bright finish. It is readily welded and fabricated and is well suited to architectural, structural, marine, catering and food-industry applications where hygiene and corrosion resistance matter. For coastal or marine exposure, see our 304 vs 316 stainless steel guide.
Common Uses
Architectural and structural fabrication, balustrade and handrail components, brackets and supports, marine and coastal fixtures, catering and food-preparation environments, gates and railings, and general stainless fabrication.
Finish
Supplied in a standard mill finish. The surface may show normal mill marking or handling marks typical of stainless bar. A brushed or polished finish can be applied separately if required.
Compare Our Square Bar Range
Need a different material? Choose the right square bar for the job: mild steel square bar for general fabrication, galvanised square bar for outdoor use, and 304 stainless steel square bar for marine, food and architectural work.
Related Stainless Sections
See the rest of our 304/316 stainless range: round bar, round tube, equal angle, box & rectangle section and sheet. Work out weights with our metal weight calculator.
Delivery Information
Lead times are currently 3-5 working days. Bars are supplied in 3m lengths, so suitable delivery access is required. If your order is long or heavy, please ensure someone is available to help with offloading on arrival.