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When your project demands reliable electrical conductivity, thermal performance, or a workable metal surface for shaping and finishing, finding the right copper disc in the exact size can be a frustrating search. Whether you are a hobbyist jeweler, an electronics technician, or a DIY fabricator, these solid pure copper discs blanks deliver the dimensional accuracy and material consistency you need without compromise.
Each disc is machined from solid pure copper (typically ≥99.9% Cu), offering a bright, smooth surface finish ready for cutting, drilling, stamping, or soldering. Diameter options span 10mm to 200mm (approximately 0.39 in to 7.87 in), and thickness options range from 0.5mm to 6mm (approximately 0.020 in to 0.236 in), covering a wide spectrum of applications from thin shim stock to robust structural discs.
These copper round plate blanks are well-suited for DIY electrical bus bars and grounding pads, handmade jewelry and metal art blanks, heat spreader fabrication for electronics cooling, and custom gasket or shim applications in plumbing and mechanical assemblies.
| Material | Solid Pure Copper (≥99.9% Cu) |
|---|---|
| Shape | Round / Disc |
| Thickness Range | 0.5mm – 6mm (0.020 in – 0.236 in) |
| Diameter Range | 10mm – 200mm (0.39 in – 7.87 in) |
| Surface Finish | Smooth, bright copper (mill finish) |
| Tolerance | See variant options |
| Hardness | See variant options |
| Weight | See variant options |
| Pack Quantity | 1 Pcs / 2 Pcs / 4 Pcs (select above) |
| Applicable Standards | See variant options |
| Recommended Uses | Electrical contacts, jewelry blanks, heat spreaders, gaskets, shims, metal art |
Thinner discs (0.5mm–1mm) are ideal for shim stock, jewelry blanks, and decorative metalwork where flexibility and light weight matter. Mid-range thicknesses (1.5mm–3mm) suit electrical contact pads, heat spreaders, and structural craft pieces. Thicker discs (3.5mm–6mm) are better for heavy-duty gaskets, bus bar sections, and applications requiring rigidity. Select your thickness from the variant options above.
Measure the target area or opening your disc needs to cover or fit into, then select the nearest diameter from the dropdown. Diameters range from 10mm (≈0.39 in) to 200mm (≈7.87 in). If you need a custom fit, it is easier to order slightly larger and trim down than to work with an undersized blank.
Pure copper is a ductile, moderately soft metal — it is not intended for high-load structural applications. However, thicker variants (3mm–6mm) provide good rigidity for gaskets, spacers, and electrical bus applications where mechanical stress is moderate. For high-strength structural needs, consider copper alloys such as brass or bronze instead.
Pure copper naturally oxidizes when exposed to air and moisture, developing a characteristic reddish-brown tarnish and eventually a green patina (verdigris). This patina is actually a protective layer that slows further corrosion. For applications requiring a bright finish, apply a clear lacquer or copper sealant. For outdoor or high-humidity environments, additional protective coating is recommended.
Yes. Pure copper has excellent solderability and is compatible with standard tin-lead and lead-free solder alloys, as well as silver brazing rods. Use an appropriate copper-compatible flux (such as rosin or phosphoric acid flux) to ensure a clean, strong joint. Clean the surface with fine abrasive or flux before soldering for best results.
Absolutely. These copper disc blanks are a popular choice for jewelry makers, metal artists, and stamping enthusiasts. The smooth surface accepts metal stamps, engraving tools, patina chemicals, and enamel coatings. Thinner variants (0.5mm–1.5mm) are easiest to work with hand tools, while thicker discs may require bench shears or a drill press for further shaping.
Pack quantities of 1, 2, or 4 pieces are available depending on the size selected. For prototyping or one-off projects, a single piece is sufficient. For batch production, craft kits, or to have spares on hand, the 2- or 4-piece packs offer better value. Select your preferred quantity from the Amount (Pcs) option above.
