304 A2 Stainless Steel Flat Bar Metal Plate Strip Width 10MM-80MM Length 500MM

304 (A2) stainless steel contains 18% chromium and 8% nickel and offers solid corrosion resistance for most indoor, outdoor, and light marine applications. 316 (A4) adds 2–3% molybdenum, which significantly improves resistance to chloride pitting — making it the preferred choice for direct saltwater immersion or aggressive chemical environments. For most DIY, fabrication, and general structural uses, 304 is the practical and cost-effective choice.

Thickness governs bending stiffness and load-bearing capacity — thicker bars resist deflection under load. Width determines the bearing surface area and visual footprint. For light brackets and trim work, 3–5 mm thick bars are typically sufficient. For structural supports, frames, or load-bearing applications, 6–12 mm or greater is more appropriate. If you are unsure, contact us with your load requirements and span length.

Yes. 304 stainless steel flat bar welds well using TIG or MIG processes with ER308L filler wire. Use a stainless-rated wire brush for cleaning and avoid cross-contamination with carbon steel tools, which can introduce rust spots. Post-weld passivation is recommended for outdoor or food-contact applications.

304 stainless steel forms a self-repairing passive oxide layer that resists rust and staining in most outdoor environments. It performs well in rain, humidity, and mild coastal conditions. In direct, prolonged saltwater spray or immersion, surface discolouration (tea staining) can occur over time — for those environments, 316 grade is recommended. Regular rinsing with fresh water extends the appearance of 304 in coastal settings.

An angle grinder fitted with a stainless-rated cutting disc is the most common method for workshop cuts. A metal-cutting bandsaw or cold saw also produces clean, burr-minimal cuts. Avoid using carbon steel blades without a stainless rating, as they can contaminate the cut edge and cause surface rust. Always wear appropriate PPE and secure the bar firmly before cutting.

304 stainless steel is widely used in food-processing and kitchen environments due to its corrosion resistance and ease of cleaning. The mill finish on these bars is functional but not polished — if a smooth, hygienic surface is required for direct food contact, additional finishing (brushing or polishing) is recommended. For commercial food-grade applications requiring full compliance, verify with your local regulatory requirements.

Thinner bars (3–5 mm) can typically be cold-bent using a bench vise, press brake, or pipe bender, depending on the bend radius. Thicker sections (8 mm and above) may require a hydraulic press brake for clean bends without cracking. 304 stainless work-hardens during cold forming, so tight-radius bends on thicker stock may need heat assistance. Always allow for springback when calculating your bend angle.