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When your project demands a metal that stands up to moisture, heat, and electrical stress without corroding or warping, standard sheet metals fall short. Makers, hobbyists, marine fabricators, and electronics builders who need reliable flat stock in exact dimensions will find the copper-nickel alloy sheet plate an indispensable material in their workshop.
Each panel is cut from cupronickel alloy — a copper-nickel blend known for its excellent corrosion resistance and moderate electrical conductivity. Sheets are available in flat panel sizes ranging from 100×100mm (approx. 3.9"×3.9") to 150×150mm (approx. 5.9"×5.9") and 100×300mm (approx. 3.9"×11.8"), with thickness options spanning 0.2mm to 3mm (approx. 0.008" to 0.118"). Multi-piece packs of 1, 2, or 4 pieces are offered to match your project scale.
Typical applications include DIY shielding panels for electronics enclosures, marine hardware fabrication requiring saltwater-resistant flat stock, heat exchanger shim stock for HVAC and plumbing repairs, and decorative metalwork for jewelry-making or craft projects using thin cupronickel foil sheet.
| Material | Copper-Nickel Alloy (Cupronickel) |
|---|---|
| Available Sizes (W × L) | 100×100mm / 100×200mm / 100×300mm / 150×150mm |
| Thickness Range | 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.8mm, 1mm, 1.5mm, 2mm, 3mm |
| Surface Finish | See variant options |
| Corrosion Resistance | Good — suitable for humid and marine environments |
| Electrical Conductivity | Moderate (lower than pure copper, higher than pure nickel) |
| Machinability | Good — machinable with standard metalworking tools |
| Weldability | Solderable and brazeable; TIG/MIG weldable with appropriate filler |
| Pack Quantity | 1 Pcs / 2 Pcs / 4 Pcs (see variant options) |
| Form Factor | Flat sheet / foil panel |
For shielding, craft, and decorative applications, 0.2mm–0.5mm foil is typically sufficient and easy to cut with scissors or tin snips. For structural shims, gaskets, or brackets that need to hold shape under load, choose 1mm–3mm. If you are unsure, 0.8mm–1mm is a versatile middle ground that balances workability with rigidity.
Yes. Copper-nickel alloys are widely used in marine environments because of their resistance to seawater corrosion and biofouling. Thicker variants (1.5mm–3mm) are appropriate for brackets, backing plates, and through-hull reinforcement in small watercraft and marine DIY builds.
Cupronickel naturally develops a thin oxide patina over time when exposed to air and moisture, similar to copper. This patina is protective and does not indicate structural degradation. For applications requiring a bright finish, periodic polishing with a metal polish or a light abrasive pad will restore the surface.
Yes. Cupronickel sheets are solderable using standard rosin-core or silver solder with appropriate flux. For welding, TIG welding with ERCuNi filler rod is recommended. Brazing with silver-based filler also works well. Avoid using mild steel filler rods, as they are not compatible with copper-nickel alloys.
Sheets 0.2mm–0.8mm thick cut cleanly with aviation tin snips, metal scissors, or a rotary tool with a cutting disc. Sheets 1mm–2mm work well with a jigsaw fitted with a metal-cutting blade or an angle grinder with a thin cutting disc. The 3mm variant may require a bandsaw or angle grinder for clean cuts.
Order the next size up from your finished part dimensions to allow for cutting margins. For example, if your finished part is 90mm×90mm, the 100mm×100mm panel gives you a 5mm margin on each side. For longer strips or rectangular parts, the 100mm×200mm or 100mm×300mm panels offer more layout flexibility.
Yes. All pack quantities (1 Pcs, 2 Pcs, 4 Pcs) contain identical sheets of the selected size and thickness. Ordering multi-piece packs simply reduces the per-sheet cost and is ideal for projects requiring multiple identical panels or for stocking your workshop.
