Speciality Metals Magnetic Sheet 430 | Stainless Steel 0.6mm - 12mm Sheet Metal

Yes. Grade 430 is a ferritic stainless steel, which means its crystal structure is magnetic. Unlike austenitic grades (304, 316), it will attract and hold a magnet. This makes it the correct choice for magnetic display boards, sensor proximity applications, and any project where magnetic response is a functional requirement.

For decorative panels, splashbacks, and light shielding, thicknesses of 0.55 mm–1.4 mm are typically sufficient and easy to cut with tin snips or a jigsaw. For structural brackets, load-bearing fixtures, or applications requiring rigidity, 2.3 mm–4 mm is a common range. Thicknesses of 5 mm and above are suited to heavy-duty fabrication and require angle grinders or plasma cutters for cutting.

Smooth-surface sheets (0.55 mm–2.8 mm) have a standard mill finish that is suitable for visible surfaces, bending, and forming. Rough-surface sheets (4 mm–12 mm) have a textured surface that improves mechanical adhesion for bonding agents, primers, and paints — making them better suited to structural and coated applications.

Grade 430 forms a chromium oxide passive layer that resists rust in dry indoor and light-moisture environments. It is not recommended for continuous exposure to salt spray, chlorinated water, or harsh chemicals. For outdoor or marine environments, Grade 316 stainless steel would be a more appropriate choice.

Yes. Grade 430 is weldable using MIG or TIG processes with a matching filler rod. For thinner sheets (under 1.5 mm), TIG welding gives better control and reduces warping. Drilling is straightforward with HSS or cobalt drill bits and cutting fluid. For thicker sections (4 mm+), a step drill or carbide bit is recommended. Post-weld annealing at 750–850 °C is advised for thicker sections to restore ductility.

Use the Sheet Size dropdown to choose the dimensions closest to your finished part — leaving a small allowance for cutting. If you need multiple identical pieces, the 5 Pcs pack offers the best per-unit value for smaller sizes. For larger sheets (200×200 mm and above), the 1 Pcs option lets you test fit before committing to a larger order.

Mechanically, yes — they can be used in the same assembly. However, galvanic corrosion can occur at contact points in wet environments due to differences in electrode potential. In dry or controlled environments this is rarely an issue. If welding dissimilar grades together, consult a welding engineer to select the correct filler material.