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Finding flat, true-diameter copper blanks that don't warp, oxidize unevenly, or arrive with burrs is a constant frustration for jewellers, electricians, and fabricators alike. These solid round copper sheet discs are cut for makers who need consistent geometry and reliable conductivity right out of the pack — no secondary flattening or deburring required.
Each disc is machined from pure copper (Cu), available in three thicknesses — 0.5 mm (~0.020 in), 0.8 mm (~0.031 in), and 1 mm (~0.039 in) — and in diameters ranging from 10 mm (~0.39 in) to 200 mm (~7.87 in). Packs are offered in quantities of 1, 2, 4, 5, 8, 10, and 20 pieces to suit both prototyping and production runs.
Typical applications include copper gasket blanks for plumbing and HVAC, stamping and etching blanks for jewellery and art, electrical bus-bar discs, heat-spreader shims for electronics, and decorative inlay rounds for woodworking projects.
| Material | Pure Copper (Cu) |
|---|---|
| Thickness Options | 0.5 mm / 0.8 mm / 1 mm |
| Diameter Range | 10 mm – 200 mm (0.39 in – 7.87 in) |
| Shape | Round / Disc |
| Surface Finish | See variant options |
| Hardness | See variant options |
| Conductivity | High (pure copper grade) |
| Pack Quantity | 1 / 2 / 4 / 5 / 8 / 10 / 20 Pcs (select above) |
| Weight per Piece | See variant options |
| Application | Jewellery blanks, gaskets, electrical contacts, heat spreaders, decorative inlay |
Select the diameter that matches your finished part size — remember to account for any material removed during edge finishing. For thickness: 0.5 mm suits lightweight stamping and jewellery; 0.8 mm is a versatile general-purpose gauge; 1 mm is recommended for gaskets, structural shims, or applications requiring higher rigidity. Use the variant selectors above to pick your exact combination.
These are pure copper (Cu) discs, not brass or bronze alloys. Pure copper offers superior electrical conductivity and thermal transfer compared to alloys, making it the preferred choice for electrical contacts, heat spreaders, and applications where conductivity is critical.
Copper naturally oxidises when exposed to air and moisture, developing a patina over time. For applications requiring a bright finish, apply a clear lacquer or anti-tarnish coating after cleaning. For decorative or jewellery use, the natural patina can be an aesthetic feature. For electrical or sealing applications, the oxide layer has minimal impact on performance at typical operating conditions.
Yes. Pure copper is highly solderable and brazeable using standard copper-compatible fluxes and filler materials. Ensure the surface is clean and free of oxidation before soldering for the best joint quality. These discs are compatible with both soft soldering (electronics) and silver brazing (plumbing/HVAC).
The discs are cut with consistent, smooth edges suitable for most applications without additional deburring. However, for jewellery or skin-contact use, we recommend a light pass with fine-grit sandpaper (400–600 grit) or a deburring tool to achieve a polished edge finish.
For prototyping or small-batch work, the 1–4 piece packs are ideal. For production runs or bulk stock, the 10 or 20-piece packs offer better per-unit value. Select your preferred quantity using the "Amount (Pcs)" variant option above. If you need quantities beyond what's listed, contact us to discuss wholesale pricing.
Yes. Pure copper's high electrical conductivity makes these discs well-suited for use as bus bar blanks, grounding pads, and electrical contact discs. The 1 mm thickness is typically preferred for higher-current applications. Always verify your specific current rating and installation requirements with a qualified electrician.
