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When your project demands a conductor that won't let you down, sourcing the right copper stock is half the battle. Makers, electricians, and workshop fabricators who need consistent purity and precise dimensions will find these pure T2 copper flat bars a dependable choice for both prototyping and production runs.
Each bar is made from 99.9% pure T2 electrolytic copper, offering excellent electrical and thermal conductivity. Available in thicknesses of 10mm and 12mm, widths ranging from 20mm to 100mm (approximately 0.79 in to 3.94 in), and a standard cut length of 200mm (approximately 7.87 in). The flat, mill-finished surface is ready for cutting, bending, or machining.
Typical applications include custom copper busbar fabrication for electrical panels, grounding straps and earthing connections in DIY electronics, heat spreader blanks for thermal management builds, and decorative metalwork or jewelry-making projects requiring high-purity copper flat bar stock.
| Material | T2 Electrolytic Copper (Cu ≥99.9%) |
|---|---|
| Thickness | 10mm / 12mm (see variant options) |
| Width | 20mm / 30mm / 40mm / 50mm / 60mm / 80mm / 100mm |
| Length | 200mm (~7.87 in) |
| Surface Finish | Mill finish (bright, uncoated) |
| Electrical Conductivity | ≥99% IACS |
| Thermal Conductivity | Typically ~385 W/m·K |
| Hardness | Soft / annealed (typically 40–65 HV) |
| Temper | See variant options |
| Weight (per piece) | See variant options |
For low-current applications (under 100A), a 10mm × 20mm or 10mm × 30mm bar is typically sufficient. For higher-current busbars (100A–300A+), wider bars such as 10mm × 80mm or 12mm × 100mm provide the cross-sectional area needed to minimize resistive heating. Always calculate the required cross-section based on your target current density (typically 1–3 A/mm² for copper busbars).
T2 copper in the soft/annealed condition has a tensile strength of approximately 200–250 MPa, which is adequate for light-duty brackets, clamps, and grounding lugs. For applications requiring higher mechanical strength, consider work-hardening the copper after forming, or use a thicker cross-section. It is not recommended as a primary structural load-bearing member.
Copper naturally oxidizes to form a brownish-red patina, which then slowly develops into a green verdigris in humid or outdoor environments. This patina is a stable oxide layer that actually slows further corrosion. For electrical connections, clean contact surfaces with fine abrasive or flux before joining to ensure low-resistance contact. For decorative use, a clear lacquer coat can preserve the bright finish.
Yes. High-purity copper is one of the most effective materials for RF shielding due to its high electrical conductivity. These flat bars can be cut and formed into shielding panels, Faraday cage frames, or gasket stock. For best shielding performance, ensure all seams and joints are soldered or mechanically bonded to avoid gaps.
Copper cuts well with a standard hacksaw, band saw, or angle grinder with a metal-cutting disc. For drilling, use sharp HSS or cobalt drill bits at moderate speed with cutting oil to prevent work-hardening and bit wear. Milling and tapping are also straightforward with standard tooling. Avoid high-speed dry cutting, which can cause the copper to smear rather than cut cleanly.
Absolutely. T2 copper's softness and malleability make it a popular choice for hand-forged jewelry, decorative inlays, and art metalwork. The 10mm and 12mm thickness options are well-suited for bold cuff bracelets, sculptural elements, or architectural accent pieces. The mill-finished surface can be polished, patinated, or textured to achieve a wide range of decorative effects.
Use the variant selectors above to choose your Bar Thickness (10mm or 12mm), Width (20mm to 100mm), and Bar Length (200mm standard). If you need a custom length or quantity, please use the contact form to inquire before ordering. Each variant is sold as a single piece unless otherwise noted.
