Precision Machining for Conductive, Wear-Resistant and Detail-Rich Components
Copper alloys are chosen for more than appearance. Copper brings electrical and thermal conductivity, brass offers excellent machinability and clean detail, while bronze is valued for wear and bearing performance. The machining approach should follow the property the part is designed to use.
Common Copper, Brass & Bronze Grades Across Standards
Cross-standard matches are intended for quick RFQ recognition; final material confirmation should follow the drawing and material certificate.
| Material | US / UNS | EN / DIN | JIS | GB / China |
| ETP Copper | C11000 | Cu-ETP / CW004A | C1100 | T2* |
| Oxygen-Free Copper | C10200 | Cu-OF / CW008A | C1020 | TU1 / TU2* |
| Free-Cutting Brass | C36000 | CuZn36Pb3 / CW603N | C3601 / C3602 | HPb59-1-type* |
| Phosphor / Bearing Bronze | Selected UNS | Selected EN grades | Selected JIS grades | By drawing |
Supplementary note: Pure copper is typically selected for conductivity; brass for efficient machining and fine detail; bronze for sliding and wear.
Copper vs. Brass vs. Bronze
Copper — conductivity — Best suited to contacts, busbars and parts where electrical or thermal transfer is the main design driver.
Brass — machinability — A strong choice for fine turned details, threads, fittings and small precision components.
Bronze — wear performance — Often selected for bushings, sliding interfaces and bearing-style components.
Machining & Functional Surface Considerations
Copper and some copper alloys can be easy to mark, deform or smear if clamping and cutting conditions are not well controlled. Conductive contacts, cosmetic faces and wear surfaces may also require different treatment strategies on the same part.
Controlled clamping — Support the part without excessive pressure that can mark or deform softer sections.
Sharp, stable cutting — Tool condition and cutting strategy help reduce smearing and inconsistent finish.
Selective surface treatment — Contact zones or cosmetic surfaces can be treated differently according to function.
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We machine a wide range of metals, engineering plastics, and selected high-performance materials for custom CNC machined parts
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