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When your project demands reliable electrical conductivity and clean, burr-free edges, finding the right copper disc blank can be a frustrating search. Whether you are a maker, electrician, metalworker, or hobbyist, these T2 solid copper discs circle blanks deliver the dimensional accuracy and material consistency your work requires.
Each disc is machined from T2 (C11000-equivalent) pure copper, offering a copper content of ≥99.9%. Available in two thicknesses — 5mm (~0.197 in) and 6mm (~0.236 in) — with outer diameters ranging from 10mm (~0.39 in) to 200mm (~7.87 in), these round sheets cover a wide spectrum of applications. Sold individually or in multi-piece sets (1–10 pcs per order).
Typical use cases include custom electrical bus bars and grounding pads, heat-sink shims and thermal interface discs, jewellery blanks and metal stamping stock, and decorative inlay or craft projects requiring a solid copper disc blank in a specific diameter.
Manufactured from T2 grade copper (≥99.9% Cu), delivering excellent electrical conductivity (typically ≥58 MS/m) and thermal conductivity (~390 W/m·K) for demanding applications.
Available from 10mm to 200mm outer diameter in this listing, with thickness options of 5mm and 6mm — covering the most common disc blank sizes for DIY and light industrial work.
Each disc is cut to a consistent round profile. Edges are suitable for direct use or light finishing with a file or deburring tool before assembly.
T2 copper machines cleanly with standard HSS or carbide tooling. Suitable for drilling, turning, milling, and cold-forming without cracking at room temperature.
Ideal for grounding discs, bus bar blanks, heat-sink shims, and electrical contact pads where low resistance and high thermal transfer are critical.
Order 1, 2, 3, 4, 5, 6, 8, or 10 pieces per variant to match your project needs — from single prototypes to small production runs.
| Material Grade | T2 Copper (≥99.9% Cu) |
|---|---|
| Thickness Options | 5mm (~0.197 in) / 6mm (~0.236 in) |
| Outer Diameter Range | 10mm – 200mm (0.39 in – 7.87 in) |
| Shape | Flat round disc (no hole) |
| Surface Finish | See variant options |
| Electrical Conductivity | ≥58 MS/m (typical for T2 copper) |
| Thermal Conductivity | ~390 W/m·K (typical for T2 copper) |
| Hardness | See variant options |
| Quantity per Order | 1 / 2 / 3 / 4 / 5 / 6 / 8 / 10 pcs |
| Pre-Drilled | No — supplied as solid blanks |
Select the outer diameter (OD) that matches your target application — for example, a 50mm disc for a grounding pad or a 100mm disc for a heat-sink shim. Choose 5mm thickness for lighter-duty or weight-sensitive applications, and 6mm where additional rigidity or thermal mass is needed. Use the variant selectors above to pick your exact combination.
T2 copper is a designation for electrolytic tough-pitch (ETP) copper with a purity of ≥99.9% Cu. It offers excellent electrical conductivity (≥58 MS/m), good thermal conductivity (~390 W/m·K), and is widely used in electrical and thermal applications. It is comparable to C11000 in international standards and is softer and more conductive than brass or bronze alloys.
Copper naturally forms a protective patina (cuprous oxide) over time that slows further oxidation. For indoor electrical or thermal applications this is generally acceptable. For outdoor or high-humidity environments, consider applying a clear lacquer or anti-tarnish coating after installation. The discs are supplied without any surface coating.
Yes. T2 copper is highly solderable with standard rosin-core or water-soluble flux solders, and can be brazed using silver-based or phosphor-copper brazing alloys. Ensure the surface is clean and free of oxidation before soldering for best results.
Yes. T2 copper machines well with HSS or carbide tooling. Use sharp tools, adequate cutting fluid, and moderate feed rates to avoid work-hardening. The discs can be drilled, turned, milled, or tapped to suit your design. They are supplied as solid blanks with no pre-drilled holes.
This listing offers quantity options from 1 to 10 pieces per order. For prototyping or single repairs, choose 1 pc. For small production runs or to have spares on hand, multi-piece options (2, 3, 4, 5, 6, 8, or 10 pcs) offer better value per piece. Select your quantity in the Amount variant selector above.
Weight varies by diameter and thickness. As a reference, a 5mm-thick, 50mm-diameter T2 copper disc weighs approximately 87g; a 6mm-thick, 100mm-diameter disc weighs approximately 420g. Exact weights for your selected variant are available on request — contact us to confirm.
Yes. The smaller diameter options (10mm–50mm) in 5mm thickness are popular for metal stamping blanks, pendant bases, and decorative inlay work. The clean round profile and pure copper composition make them suitable for jewellery-making, enamelling, and craft projects. Light sanding or polishing may be needed to achieve a mirror finish.
