Stainless Steel Sheet Bright Polish 12mm 14mm 16mm Thick Many Size Grade A2 304

The right thickness depends on the load and application. 12mm is suitable for moderate structural brackets, backing plates, and decorative panels where some rigidity is needed but weight is a concern. 14mm suits heavier mounting pads and machinery bases with moderate dynamic loads. 16mm is the choice for high-load structural applications, thick weld-on gussets, or situations where deflection under load must be minimized. If you are unsure, calculate the expected bending stress for your span and load, then select the thickness with an appropriate safety factor.

Yes, for most structural fabrication tasks. Grade A2 304 stainless has a typical tensile strength of 515–720 MPa and a minimum yield strength of 205 MPa. At 12–16mm thickness, these sheets provide substantial section modulus for brackets, base plates, and frames. For applications with extreme dynamic loading or highly corrosive environments (such as offshore marine), consult a structural engineer and consider whether Grade A4 (316) or a duplex alloy is more appropriate.

Grade A2 304 stainless forms a passive chromium oxide layer that resists rust and oxidation in most outdoor environments, including rain, humidity, and mild industrial atmospheres. However, in environments with prolonged exposure to chlorides — such as coastal salt spray or swimming pool surrounds — surface staining or pitting can occur over time. For those conditions, Grade A4 (316) stainless, which contains molybdenum, offers better chloride resistance. Regular rinsing with fresh water extends the service life of 304 in borderline environments.

Yes. Grade 304 stainless is one of the most commonly welded and machined stainless alloys. TIG welding is preferred for clean, low-distortion joints; MIG welding is also effective for thicker sections. Use 308L filler wire for TIG/MIG. For machining, use sharp carbide tooling, lower cutting speeds than mild steel, and adequate coolant to manage work-hardening. Drilling requires cobalt or carbide drill bits and a consistent feed rate to avoid work-hardening the entry point.

Order the next size up from your required finished dimension to allow for cutting, squaring, and any edge cleanup. For example, if your finished part needs to be 180mm × 180mm, the 200mm × 200mm blank gives you 10mm of trim allowance on each edge. If you need a non-standard footprint not listed, contact us to confirm availability of custom cut sizes.

The bright polish finish is applied to the face (top) surface. The reverse side typically has a mill or dull finish consistent with the rolling and processing of thick-gauge plate. If a polished finish on both faces is required for your application, contact us to confirm before ordering, as this may vary by batch.

Measure the bolt circle diameter or the footprint of the equipment being mounted, then add at least 10–20mm of edge distance beyond the outermost fastener hole on each side. This edge distance prevents stress cracking around bolt holes under load. Choose the listed size that accommodates your required footprint plus edge distance, then drill or cut to final dimensions on your bench.