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Material · Copper C110 · Brass C260

Copper and brass sheet — electrical, decorative, acoustic.

Copper C110 for electrical and thermal applications — bus bars, heat spreaders, EMI shielding. Brass C260 (cartridge brass) for decorative parts, electrical connectors, and applications needing copper-like properties with higher strength. Both stocked in 0.5–3 mm sheet.

QUICK SPECS
Copper C110 tensile220 MPa (soft) / 380 MPa (hard)
Brass C260 tensile315 MPa (soft) / 550 MPa (hard)
Copper C110 conductivity101% IACS (electrical); 391 W/m·K (thermal)
Brass C260 conductivity28% IACS
Thicknesses stocked0.5, 0.8, 1.0, 1.5, 2.0, 3.0 mm
STATUSIN OPERATION
§ 01 / WHEN

When copper, when brass

Copper and brass look similar but serve different purposes:

  • Copper (C110): highest electrical and thermal conductivity. Bus bars, heat sinks, grounding straps, EMI shielding, antennas. Soft — work-hardens with cold work.
  • Brass (C260): yellow-gold color, much stronger than copper, machinable. Decorative architectural panels, musical instruments (cymbals, horns), electrical connectors, fasteners, plumbing parts.

For electrical conductivity, always copper (brass is only 28% as conductive). For decorative applications, brass (cheaper than gold-plating, warm gold color). For architectural or acoustic applications, brass (harder, more scratch-resistant).

§ 02 / FABRICATION

Fabrication notes

Copper is soft and work-hardens quickly. Implications for fabrication:

  • Bending: easy on soft (annealed) stock. Hard stock cracks — must anneal before bending.
  • Laser cutting: possible but requires anti-reflection cutting head (copper reflects most laser wavelengths). 6 mm max on fiber laser.
  • Welding: high thermal conductivity means large heat input needed. TIG with helium/argon mix. Pre-heat thick sections.
  • Tarnishing: both copper and brass oxidize rapidly. Lacquer, PVD coating, or nickel plating for stable appearance.

Brass is stronger and holds edges better than copper. Standard shop practices apply.

READY WHEN YOU ARE

Copper bus bars or brass architectural panels.

Upload DXF. Specify C110 (copper) or C260 (brass) and thickness. Lacquer finishing available for stable appearance.

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