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

Measure the area you need to cover or the bore you need to fit, then select the next size up to allow for any trimming. For backing plates and speaker grilles, match the disc diameter to the outer flange dimension. For magnetic fixtures, choose a diameter that gives adequate contact area for the holding force you need.

Thinner discs (0.6 mm–1.5 mm) are suited to decorative inlays, shielding blanks, and light-duty covers. Mid-range thicknesses (2 mm–5 mm) work well for structural backing plates and speaker enclosure components. Thicker discs (6 mm–12 mm) are appropriate for heavy-duty fixtures, tooling plates, and applications where rigidity under load is required.

Yes. Grade 430 is a ferritic stainless steel, which means it has a body-centred cubic crystal structure that is inherently magnetic. Unlike austenitic grades such as 304 or 316, it will attract and hold a magnet in both the annealed and work-hardened states.

Grade 430 offers moderate corrosion resistance due to its 16–18% chromium content. It performs well in dry indoor environments and sheltered outdoor settings. It is not recommended for continuous exposure to salt spray, chlorinated water, or aggressive chemical environments — for those conditions, Grade 316 would be a more appropriate choice.

Yes. Grade 430 can be MIG or TIG welded using standard ferritic or austenitic stainless consumables. It can also be drilled, tapped, and ground with standard tooling. Unlike austenitic grades, it does not work-harden as aggressively, which makes machining more predictable. Post-weld annealing is recommended for structural joints to restore ductility in the heat-affected zone.

The nominal thickness (e.g. "1 mm") is the standard commercial designation. The measured actual thickness (e.g. "0.9 mm") reflects the real dimension after the rolling and finishing process, which typically falls within the standard tolerance band for that gauge. Both values are listed in the variant name so you can design to the actual dimension rather than the nominal one.

Each variant lets you choose 1, 2, or 5 pieces. If you are prototyping or need a single replacement blank, select 1 Pcs. For small batch production or to keep a spare on hand, 2 Pcs or 5 Pcs packs offer a lower per-piece cost. Check the variant selector for the pack size that fits your quantity requirement.