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CNC Machining of Copper Components by China Suppliers | High-Quality Factory Production Solutions
Copper & Copper Alloy Material Library
We stock a wide range of high-purity coppers and key copper alloys, enabling optimal selection for conductivity, machinability, strength, and wear resistance.
Copper 101 / C110 (Oxygen-Free Electronic Copper)
The purest commercially available grade (99.99% Cu). Offers exceptional electrical and thermal conductivity. Primarily used for high-frequency conductors, waveguides, vacuum components, and other critical electronic applications where high purity is essential.
Copper C110 (Electrolytic Tough Pitch Copper)
The most common and widely used copper (99.9% Cu). Provides excellent electrical conductivity and formability. The standard choice for electrical components, busbars, connectors, and general conductive parts.
Copper C932 (SAE 660 - High-Leaded Tin Bronze)
A bearing bronze with excellent machinability, good anti-galling properties, and high load capacity. Ideal for bushings, bearings, thrust washers, and other applications requiring low friction and wear resistance against steel.
Copper 260 (Cartridge Brass - C26000)
A classic 70/30 brass with superb cold-working properties, good strength, and excellent corrosion resistance. Widely used for plumbing components, electrical sockets, connectors, decorative hardware, and custom machined parts requiring a balance of formability and durability.
Copper 360 (Free-Cutting Brass - C36000)
Known as the standard for machinability among copper alloys. Offers high-speed machining capabilities, producing small, broken chips and excellent surface finishes. The preferred choice for high-volume production of complex parts like gears, fittings, valves, and screw machine components.
Frequently Asked Questions
Q: Which copper grade offers the highest electrical conductivity?
Copper 101 (Oxygen-Free Electronic Copper) is the purest commercially available grade (99.99% Cu) and offers exceptional electrical and thermal conductivity, making it ideal for high-frequency conductors and vacuum components.
Q: What is the most common copper grade used for general electrical components?
Copper C110 (Electrolytic Tough Pitch Copper) is the most widely used grade (99.9% Cu). It is the standard choice for general electrical components, busbars, and connectors due to its excellent conductivity and formability.
Q: Which copper alloy is best suited for low-friction bearing applications?
Copper C932 (SAE 660 - High-Leaded Tin Bronze) is highly recommended. It is a bearing bronze that features excellent machinability, high load capacity, and anti-galling properties, making it ideal for bushings, bearings, and thrust washers.
Q: What makes Copper 260 (Cartridge Brass) suitable for decorative and plumbing hardware?
Copper 260 is a classic 70/30 brass known for its superb cold-working properties, good strength, and excellent corrosion resistance, providing the ideal balance of formability and durability.
Q: Why is Copper 360 preferred for high-volume screw machine parts?
Copper 360 (Free-Cutting Brass) is the industry standard for machinability. It enables high-speed machining, generates small, broken chips, and delivers excellent surface finishes for complex parts like gears and valves.
Finishes and Post-Processing Options
The zinc alloy substrate is highly suitable for various surface treatments to enhance decoration, protection, or functionality:
Electroplating: Such as chrome, nickel, gold, or silver plating, providing a highly decorative appearance, excellent wear and corrosion resistance. This is the most common choice.
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Passivation or Chromate Conversion Coating:
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Powder Coating:
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Painting:
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Physical Vapor Deposition (PVD):
Design and Machining Considerations
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Process Selection:
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Design Considerations:
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Material Selection:
Zamak 3 and 5 are suitable for the vast majority of general-purpose parts requiring good appearance and strength; ZA-8 is better for wear and bearing applications; for making rapid tooling, choose specialized alloys like Kirksite.
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