Stainless Steel 304 Sheet Metal Plate — 0.5 to 5mm Thick, Multiple Sizes

For light decorative or shielding work, 0.5–0.8mm is typically sufficient. Structural brackets and load-bearing supports generally call for 1.5–3mm. Heavy-duty fabrication or high-stress applications typically use 4–5mm. When in doubt, go one step thicker — it's easier to grind down than to reinforce.

Measure your finished part and add at least 5–10mm on each side for cutting allowance. Available sizes range from 100×100mm (≈3.9"×3.9") up to 300×300mm (≈11.8"×11.8"), with rectangular options like 200×300mm (≈7.9"×11.8") for elongated parts.

304 stainless steel typically has a tensile strength of around 515 MPa (75,000 psi) and a yield strength of approximately 205 MPa (30,000 psi). Actual load capacity depends on thickness, sheet dimensions, support span, and how the load is applied.

Yes. 304 stainless steel is generally suitable for outdoor and humid environments. It resists rust and oxidation well in most conditions. For prolonged exposure to saltwater or chlorine-rich environments, 316 stainless is typically recommended instead.

Yes. 304 stainless is one of the most weldable stainless alloys and responds well to TIG, MIG, and spot welding. It can be cut with an angle grinder, plasma cutter, or laser, and drilled with standard HSS or cobalt bits. Use cutting fluid to extend tool life.

These flat sheets are unthreaded stock material. You can drill and tap them to accept metric (M3–M12) or imperial (UNC/UNF) fasteners depending on your application. Thicker sheets (2mm+) generally hold threads more reliably without backing plates.

Order 1Pcs for prototyping or single repairs. The 2Pcs option works well when you need a matched pair (e.g., two brackets). The 5Pcs pack offers a lower per-piece cost and is ideal for batch fabrication or keeping spares on hand.