Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When your project demands reliable electrical conductivity, thermal transfer, or a clean copper finish, finding the right disc blank in the exact size you need can be a real challenge. These solid pure copper discs are designed for makers, hobbyists, engineers, and small-workshop fabricators who need consistent, ready-to-use copper rounds without the hassle of cutting sheet stock themselves.
Each disc is cut from solid pure copper (typically 99%+ Cu), available in wire-gauge-style thicknesses from 0.3mm to 3.5mm (~0.012" to ~0.138") and diameters from 10mm to 300mm (~0.39" to ~11.81"). The flat, round form factor requires no further shaping for most applications, and the natural copper surface is left uncoated to preserve conductivity and solderability.
Typical use cases include DIY electrical contact pads and bus bar blanks, heat spreader discs for LED and electronics cooling, copper disc anodes for electroplating and electroforming, decorative metalworking and jewelry blanks, and gasket or shim stock for mechanical assemblies requiring a soft, conformable metal layer.
Thickness from 0.3mm to 3.5mm and diameter from 10mm to 300mm — one listing covers thin shim-stock discs all the way up to heavy-gauge rounds for structural or thermal applications.
Solid pure copper discs deliver low-resistance electrical paths, making them ideal for contact pads, bus bar blanks, and grounding applications in DIY electronics and power systems.
Copper's high thermal conductivity makes these discs effective heat spreaders for LED modules, power transistors, and other heat-generating components in custom cooling assemblies.
Soft enough to drill, stamp, engrave, and solder without specialized tooling — these discs work with standard workshop equipment and are compatible with common copper-compatible fluxes and adhesives.
The bare copper finish preserves solderability and conductivity out of the box, and accepts patinas, platings, and coatings readily for decorative or protective finishing.
Available in 1, 2, or 4-piece packs depending on size — order exactly what your project requires without committing to bulk quantities you don't need.
| Material | Solid Pure Copper (typically 99%+ Cu) |
|---|---|
| Form | Round disc / flat plate blank |
| Thickness Range | 0.3mm – 3.5mm (approx. 0.012" – 0.138") |
| Diameter Range | 10mm – 300mm (approx. 0.39" – 11.81") |
| Surface Finish | Uncoated bare copper |
| Hardness | See variant options |
| Temper | See variant options |
| Pack Quantity | 1 Pcs / 2 Pcs / 4 Pcs (varies by size) |
| Weight | See variant options |
| Tolerance | See variant options |
Thinner discs (0.3mm–0.8mm) are best for shim stock, flexible electrical contacts, and decorative jewelry blanks where minimal material is needed. Mid-range thicknesses (1mm–1.5mm) suit general-purpose heat spreaders, gaskets, and craft projects. Thicker discs (2mm–3.5mm) are suited for structural applications, heavy-duty bus bar blanks, and electroforming anodes where rigidity and mass matter. Select your Thickness x Diameter combination from the variant dropdown above.
Match the diameter to your target component or cutout. For LED heat spreaders, measure the LED module's base footprint. For electrical contacts, match the terminal pad size. For jewelry blanks, choose a diameter slightly larger than your finished piece to allow for filing and shaping. Diameters are listed in millimeters — divide by 25.4 to convert to inches.
Pure copper is a relatively soft metal compared to brass or steel, which makes it easy to machine and form but less suited for high-load structural applications. For shims, gaskets, and soft-metal spacers, the material performs well. For applications requiring higher strength, consider whether a copper alloy (such as brass or bronze) might be more appropriate. Thicker variants (2mm–3.5mm) provide more rigidity for mechanical use cases.
Copper naturally oxidizes when exposed to air and moisture, developing a darkened patina over time. This does not significantly affect electrical conductivity in most applications, but if a bright finish is required, the surface can be cleaned with a mild acid solution (such as diluted citric acid) or polished mechanically. Applying a clear lacquer or anti-tarnish coating will slow oxidation for decorative applications.
Yes. Pure copper solders and brazes readily with standard copper-compatible fluxes and solders (e.g., lead-free tin-silver or tin-copper alloys). Clean the surface with flux before soldering to remove any surface oxide layer. For brazing, use a copper-phosphorus or silver-based brazing alloy appropriate for the joint temperature requirements.
Yes. Solid copper discs are commonly used as anode material in copper electroplating and electroforming setups. The pure copper composition ensures consistent ion release during the plating process. Ensure the disc is sized appropriately for your plating tank geometry and current density requirements.
Pack quantities vary by size — smaller and mid-range sizes are available in 2-piece or 4-piece packs, while larger or thicker discs are typically sold individually (1 Pcs). Select your preferred Thickness x Diameter first, then choose the Pack Quantity from the second dropdown. If you need larger quantities, consider ordering multiple units.
