Copper sheets in 12 gauge offer robust thickness for jewelry, electrical repairs, crafts, and metalworking projects. This guide highlights five top 12 gauge copper sheets from reputable brands, detailing sizes, purity, and key characteristics to help buyers compare for durability, conductivity, and workability. Each product section links to its Amazon listing for quick access to additional details and purchase options.
| Product | Size | Thickness | Material | Notes |
|---|---|---|---|---|
| Tynulox 3.9″ Square | 3.9″ x 3.9″ | 12 Gauge (2.0 mm) | 99.9% Pure Copper | High conductivity, corrosion resistant |
| Tynulox 7.9″ Square | 7.9″ x 7.9″ | 12 Gauge (2.0 mm) | 99.9% Pure Copper | Larger sheet for panels and crafts |
| uxcell 3″ Round Plate | 3″ Ø | 12 Gauge (2.0 mm) | T2 Pure Copper | Excellent conductivity, easy welding |
| uxcell 4″ x 2″ Plate | 4″ x 2″ | 12 Gauge (2.0 mm) | T2 Pure Copper | Good for small components and repairs |
| Eorbow 8″ x 12″ | 7.8″ x 11.8″ | 24 Gauge (0.5 mm) | Pure Copper | Thin but flexible, suitable for crafts |
Note: The table above summarizes five selected products focused on 12 gauge copper sheet applications. Each item links to its official Amazon listing for detailed specs, images, and purchasing options.
Tynulox 3.9″ Square Copper Sheet

Size: 3.9″ x 3.9″ x 12 Gauge (100mm x 100mm x 2.0mm), 1 piece. Material: 99.9% pure copper. Copper offers a metallic luster with excellent electrical and thermal conductivity, and resistance to corrosion, heat, and pressure. This compact sheet is suited for jewelry, repairs, and small craft projects requiring reliable conductivity and durable mass.
Tynulox 7.9″ Square Copper Sheet

Size: 7.9″ x 7.9″ x 12 Gauge (200mm x 200mm x 2.0mm), 1 piece. Material: 99.9% pure copper. Offers strong heat transfer and electrical conductivity with resistance to corrosion, temperature, and stress. Ideal for larger jewelry projects, repairs, and DIY metalwork where a balance of rigidity and formability is needed.
uxcell Pure Copper 3″ Round Plate

Material: T2 copper; Diameter: 3″ (75 mm); Thickness: 2 mm (12 gauge). Package: 2 pieces. Features strong electrical and thermal conductivity, corrosion resistance, and good processing performance. The surface may oxidize over time; polishing can restore a pristine look for crafts or jewelry.
uxcell 4″ x 2″ Copper Plate

Size: 4″ x 2″ (100 x 50 mm); Thickness: 2 mm (12 gauge). Material: T2 copper. Offers excellent electrical and thermal conductivity and corrosion resistance. Suitable for small fabrications, welding, brazing, and precise repairs. The sheet is moisture-proof, with a smooth surface for smoother finishes.
Eorbow 8″ x 12″ Copper Sheet

Size: 7.8″ x 11.8″ (20 cm x 30 cm); Thickness: 24 gauge (0.5 mm). This set contains two clean-cut sheets without burrs, ideal for crafts, jewelry, and small industry tasks. Copper’s high conductivity supports electrical and thermal applications, while the thin profile allows flexible shaping and easy cutting or engraving.
Buying Guide: Key Considerations for 12 Gauge Copper Sheets
- Thickness and rigidity: 12 gauge (about 2.0 mm) provides a sturdy base for structural parts, shields, and thicker jewelry components, while still allowing cutting, bending, and shaping with standard tools.
- Purity and conductivity: Higher purity (near 99.9%) copper delivers the best electrical and thermal performance, with greater resistance to oxidation over time when sealed or plated.
- Finish and surface finish: Expect natural oxidation on copper; some products note polishing or protective coatings to maintain a pristine appearance for jewelry or display pieces.
- Size and layout: Larger sheets reduce seams for panels and enclosures; smaller, round, or specialty shapes suit jewelry, repairs, or prototype components.
- Workability: Copper forms easily but can work-harden; consider tools and techniques for cutting, drilling, soldering, and brazing to minimize waste and maintain shape.
- Application fit: For electrical or heat-transfer applications, prioritize sheets with excellent conductivity and uniform thickness; for art and crafts, balance rigidity with malleability and aesthetic finish.
- Storage and handling: Copper is soft but durable; store in a dry environment to minimize oxidation, and handle edges carefully to avoid cuts.
- Budget and availability: Compare brands for consistency in thickness and tolerances; bulk purchases may reduce cost per sheet for larger projects.