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CNC Machining of Copper Components | China Supplier & Factory for High-Performance Alloys
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
99.99% Cu · Highest Purity
The purest commercially available grade. 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
99.9% Cu · Most Common Grade
The most common and widely used copper. 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
Bearing Bronze · High Load Capacity
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)
70/30 Brass · Excellent Cold-Working
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)
Best Machinability · High-Volume Production
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
QWhat is the difference between Copper 101 and Copper C110?
Copper 101 (Oxygen-Free Electronic Copper) is the purest grade at 99.99% Cu, specifically designed for critical electronic applications requiring minimal oxygen content. Copper C110 (Electrolytic Tough Pitch) is 99.9% Cu and is the most widely used general-purpose copper, offering excellent conductivity and formability at a more accessible price point.
QWhich copper alloy is best for high-speed CNC machining?
Copper 360 (Free-Cutting Brass, C36000) is the industry standard for machinability. It produces small, broken chips at high speeds and delivers excellent surface finishes, making it the top choice for high-volume, complex CNC-machined parts such as fittings, valves, and screw machine components.
QWhat copper alloy should I use for bearings and bushings?
Copper C932 (SAE 660 High-Leaded Tin Bronze) is the recommended choice for bearings and bushings. It provides excellent machinability, strong anti-galling properties, and high load capacity, making it ideal for applications that require low friction and wear resistance against steel shafts.
QIs Copper 260 suitable for plumbing and decorative applications?
Yes. Copper 260 (Cartridge Brass, C26000) is a 70/30 brass alloy well-known for its superb cold-working properties, good strength, and excellent corrosion resistance. It is widely used in plumbing components, electrical sockets, connectors, and decorative hardware.
QHow do I choose the right copper alloy for my application?
Selection depends on your key requirements: for maximum electrical conductivity, choose C101 or C110; for superior machinability in production runs, choose C360; for bearing and wear applications, choose C932; for corrosion-resistant formed parts, choose C260. Our team can assist in identifying the optimal material based on your specific performance and cost requirements.
QCan these copper alloys be custom machined to specific dimensions?
Yes. All copper and copper alloy materials in our library are available for custom machining. Whether you need standard stock shapes or precision-machined components to tight tolerances, we can accommodate a wide range of specifications across all listed grades including C101, C110, C260, C360, and C932.
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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