Mild Steel Square Bar – S275, 6m Lengths & Cut to Size, Solid Steel Square Bar for Gates, Railings, Fabrication & Brackets
Mild Steel Square Bar – S275, 6m Lengths & Cut to Size, Solid Steel Square Bar for Gates, Railings, Fabrication & Brackets
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Our S275 mild steel square bar — also called steel square bar, square steel bar or solid square section — is a hot-rolled solid bar supplied in 6m lengths or cut to size on request, in sizes from 8mm up to 40mm. A strong, weldable bar ideal for gates, railings, balusters, brackets, handle spindles and general fabrication, with a 3-5 working day lead time to mainland UK.
Technical Specification
| Material | S275 mild steel |
| Profile | Solid square bar |
| Process | Hot-rolled |
| Length | 6m (full length), or cut to size on request |
| Sizes available | 8mm up to 40mm square |
| Finish | Standard mill finish |
| Weldability | Weldable, drillable and easily fabricated |
| Standard | BS EN 10025-2 |
| Lead time | 3-5 working days (mainland UK) |
Mild Steel Square Bar Sizes & Weight Chart
Full S275 mild steel square bar size chart with weight per metre. Every size is available in 6m lengths or cut to size.
| Size | Weight (kg/m) |
|---|---|
| 8mm | 0.50 |
| 10mm | 0.79 |
| 12mm | 1.13 |
| 14mm | 1.54 |
| 16mm | 2.01 |
| 20mm | 3.14 |
| 25mm | 4.91 |
| 30mm | 7.07 |
| 40mm | 12.56 |
Popular mild steel square bar sizes include 10mm, 12mm, 16mm and 20mm square bar for gates, railings and brackets, up to 25mm, 30mm and 40mm square bar for heavier fabrication. Weights are calculated from the section dimensions — for any size use our metal weight calculator.
Rackerman is a UK steel supplier: buy mild steel square bar — also known as steel square bar, square steel bar, square metal bar or hot rolled square bar — online with fast mainland UK delivery and cut-to-size service, a convenient alternative to a local steel stockholder near you.
Common Uses
Mild steel square bar is used for gates and railings, balusters and pickets, fence infill, brackets and supports, window bars and security grilles, door and window handle spindles, machine and jig components, decorative ironwork and general fabrication. The solid square section welds, bends and twists readily and gives a clean, traditional look on gates and railings.
Cutting and Fabrication
S275 square bar cuts, drills, welds and forms with standard metalworking tools, and takes a twist or scroll well for decorative work. We can also supply this bar cut to size on request — contact us before ordering with your required lengths.
Finish and Protection
Supplied in standard mill finish, which may show light mill scale or surface oxidation — normal for untreated steel. For outdoor, damp or exposed use, clean, prime and paint the bar, or choose our galvanised steel square bar, the same solid square section with a hot-dip zinc coating for corrosion resistance.
Compare Our Square Bar Range
Choose the right square bar for the job: mild steel square bar for general fabrication, galvanised square bar for outdoor and corrosion resistance, and 304 stainless steel square bar for marine, food and architectural use.
Related Mild Steel Sections
Explore the rest of our mild steel range: angle iron, flat bar, round bar, box section (SHS), rectangular hollow section (RHS) and steel channel. Work out weights with our metal weight calculator.
Delivery Information
Lead times are currently 3-5 working days to mainland UK. Square bar is supplied in 6m 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. Contact us for a custom quote on bulk or trade quantities.
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FREQUENTLY ASKED QUESTIONS
What is S275 mild steel, and how does it differ from other types of steel?
S275 refers to a specific grade of mild steel known for its excellent structural properties. It has a minimum yield strength of 275 N/mm2, making it ideal for various construction and manufacturing applications. Compared to lower-grade steels, S275 offers enhanced strength and durability.
Why choose S275 mild steel square bars?
S275 mild steel square bars are chosen for their balanced combination of strength and weldability. These bars are versatile and suitable for a wide range of projects, from construction to fabrication. The S275 grade ensures reliability and performance in demanding applications.
What thicknesses are available for S275 mild steel square bars?
S275 mild steel square bars are available in a range of thicknesses to accommodate diverse project requirements. The options include 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 20mm, 25mm, 30mm, and 40mm.
Can S275 mild steel square bars be easily welded and fabricated?
Yes, S275 mild steel is known for its excellent weldability and formability. This makes it easy to work with, allowing for efficient fabrication and welding processes, ensuring a smooth and hassle-free construction experience.
Are these bars suitable for outdoor use or in corrosive environments?
While S275 mild steel offers good resistance to atmospheric corrosion, it is advisable to consider additional protective measures, such as coatings or galvanization, when using the bars in outdoor or corrosive environments. This ensures prolonged durability and performance.
Can square bar be cut to size?
Yes. As well as full 6m lengths, we can cut square bar to your required lengths before dispatch - send us your cutting list and we'll confirm price and lead time.
How can I purchase S275 mild steel square bars, and what quantities are available?
You can order online directly from us, or contact our sales team for a quote. We offer flexibility in quantities, catering to both small-scale projects and bulk orders. Get in touch to discuss your specific requirements.
What certifications or standards do S275 mild steel square bars adhere to?
S275 mild steel square bars typically adhere to industry standards and certifications. Common standards include EN 10025, ensuring compliance with European norms for structural steel. Always check product documentation and certifications for specific details.
If you have any further questions or need additional information, feel free to reach out to our customer support team. We're here to assist you in making informed decisions for your projects.
MONEY BACK GUARANTEE
Here at Rackerman, we take customer satisfaction very seriously. If you are unsatisfied with the quality of your product, please email us info@rackerman.co.uk or give us a call: 01665 497513 and we will make it right.
SHIPPING
It should take no longer than 1-2 business day to process your order, then 3-5 working days (5-10 working days on RSJs) to then receive your order from us after dispatch.
If you haven't received your items in this time frame, please contact us.
RETURNS
If you are unsatisfied with your purchase, that's completely fine! We offer a 30 day money back guarantee to all customers, no questions asked! Please contact us to arrange a return.