Thin Copper Parts

Our product is produced using high-quality pure copper (purple copper) or brass, with thickness ranging from 1.0 mm to 3.0 mm. We employ a wall-thinning (ironing) drawing process that gradually reduces the wall thickness of the copper. This process allows us to control wall thickness within ±0.05 mm, producing a smooth surface and increasing strength by approximately 30% compared to the raw material. The thinned copper parts exhibit excellent electrical conductivity, making them ideal for electronic devices, connectors, or valve components. Our tooling engineers design dedicated thinning drawing dies based on your drawings or sample parts, ensuring the product has precise dimensions, uniform wall transitions, and no cracks. During forming, the copper undergoes plastic deformation, and the metal grain aligns with the part shape, enhancing fatigue resistance and maintaining stable conductivity. Last year, we produced 200,000 units as connectors for a motor manufacturer. The pass rate was 99.4%, and the customer reported excellent conductivity, good assembly fit, and high repeat order rates.

Our factory spans 10,000 square meters and is equipped with 45 professional machines, including 15 presses and 4 hydraulic presses (the largest is 2,000 tons). For every batch of thin copper parts, we perform a first-article inspection. QC personnel use custom gauges to measure critical dimensions such as wall thickness, outer diameter, and height, ensuring strict compliance with drawing requirements. We maintain detailed daily production records, enabling each product to be traced back to its operator and production date. This ensures full quality control for your product orders. The multi-step thinning process uses 200 to 500-ton hydraulic presses to achieve precise wall reduction without compromising material integrity.