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When your project demands reliable electrical conductivity, consistent thickness, and a clean cut edge, generic sheet offcuts simply don't deliver. Hobbyists, jewelers, electricians, and workshop fabricators who need repeatable results turn to purpose-cut copper disc blanks — flat, ready-to-use rounds that eliminate the time and waste of cutting your own circles from raw sheet stock.
These T2 solid pure copper discs are cut from high-conductivity T2-grade copper (≥99.9% Cu). Each blank is a flat circular plate available in thickness options from 0.5 mm to 5 mm (~0.020" to ~0.197") and diameter options from 10 mm to 200 mm (~0.39" to ~7.87"). The surface is mill-finished with a natural copper tone. Variants are sold in packs of 1, 2, or 4 pieces depending on size.
Typical use cases include copper disc anodes for electroplating and electroforming setups, heat spreader blanks for DIY electronics cooling, jewelry and metalsmithing blanks for stamping and forming, electrical bus bar discs and contact pads, and decorative inlay rounds for woodworking and resin casting projects.
| Material | T2 Pure Copper (≥99.9% Cu) |
|---|---|
| Form | Flat round disc / blank |
| Thickness Range | 0.5 mm – 5 mm (0.020" – 0.197") |
| Diameter Range | 10 mm – 200 mm (0.39" – 7.87") |
| Surface Finish | Mill finish (natural copper) |
| Electrical Conductivity | ~58 MS/m (IACS ~100%) |
| Thermal Conductivity | ~390 W/m·K |
| Hardness | See variant options |
| Pack Quantity | See variant options (1, 2, or 4 pcs) |
| Weight per Piece | See variant options |
For jewelry stamping, forming, and lightweight decorative work, 0.5–1 mm thickness is typically sufficient and easy to cut and shape by hand. For electrical contact pads and bus bar applications, 1.5–3 mm provides the cross-sectional area needed for current capacity. For structural or heat-spreader uses where rigidity matters, 3–5 mm is recommended. If you are unsure, start with a thinner variant and test before committing to a larger order.
Select a diameter that matches or slightly exceeds your finished part size, as you can always reduce diameter by filing, turning, or grinding. For coin-sized jewelry blanks, 10–30 mm is common. For electroplating anodes, 50–100 mm is typical. For heat spreaders on larger components, 80–200 mm may be appropriate. The variant selector shows all available thickness × diameter combinations.
T2 copper has a tensile strength of approximately 200–250 MPa in the annealed condition. It is not a structural metal in the way steel is, but thicker discs (3–5 mm) are rigid enough for use as mounting plates, contact bases, and heat spreaders. For applications requiring higher strength, consider pairing with a backing material or using a harder copper alloy such as brass or bronze instead.
Copper naturally oxidizes when exposed to air and moisture, forming a brownish or greenish patina (verdigris). This patina is actually protective and slows further corrosion. For applications where appearance matters, the surface can be polished, lacquered, or sealed. For electrical contact applications, the contact surfaces should be kept clean and free of heavy oxidation to maintain low contact resistance.
Yes. T2 copper solders and brazes readily with standard copper-compatible fluxes and filler materials. For soft soldering, use a rosin-core or water-soluble flux with tin-silver or tin-copper solder. For brazing, use a silver-bearing brazing alloy with an appropriate flux. Clean the surface with fine abrasive or flux before joining to ensure a strong bond.
Yes. T2 copper machines well with standard HSS or carbide tooling. Use a cutting lubricant (such as a light oil or cutting fluid) to prevent built-up edge and achieve a clean finish. For drilling, use sharp bits and moderate speed with good chip clearance. For stamping, thinner discs (0.5–1.5 mm) can be punched with appropriate tooling; thicker discs require a press with sufficient tonnage.
Pack quantity varies by size — smaller or thinner discs are available in packs of 4, mid-range sizes in packs of 2, and larger or thicker discs in packs of 1. If you need more than the listed pack quantity, simply increase the order quantity at checkout. For bulk requirements, contact us to discuss volume pricing options.
