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China Copper CNC Machining Suppliers | High-Performance Copper Components from Expert Factory
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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.
99.99% Cu
High-Frequency Conductors
Waveguides
Vacuum Components
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.
99.9% Cu
Busbars
Connectors
Electrical Components
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.
Bearing Bronze
Bushings
Thrust Washers
Low Friction
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.
70/30 Brass
Plumbing
Electrical Sockets
Decorative Hardware
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.
Free-Cutting Brass
Gears & Fittings
Valves
Screw Machine Parts
❓ Frequently Asked Questions
Q What is the difference between Copper 101 and Copper C110?
A Copper 101 (Oxygen-Free Electronic Copper) has a purity of 99.99% Cu and is designed for the most demanding electronic applications such as waveguides and vacuum components. Copper C110 (Electrolytic Tough Pitch) has a purity of 99.9% Cu and is the most widely used general-purpose copper for busbars, connectors, and electrical components.
Q Which copper alloy is best for high-volume CNC machining?
A Copper 360 (Free-Cutting Brass, C36000) is the industry standard for high-volume CNC machining. It produces small, broken chips at high speeds and delivers excellent surface finishes, making it ideal for complex parts like valves, fittings, and screw machine components.
Q What copper alloy should I use for bushings and bearings?
A Copper C932 (SAE 660 High-Leaded Tin Bronze) is specifically suited for bushings, bearings, and thrust washers. It offers excellent machinability, anti-galling properties, and high load capacity with low friction against steel surfaces.
Q Is Copper 260 (Cartridge Brass) suitable for plumbing and decorative applications?
A Yes. Copper 260 (C26000) is a 70/30 brass alloy with excellent corrosion resistance, good strength, and superb cold-working properties. It is widely used in plumbing components, decorative hardware, electrical sockets, and custom machined parts.
Q How do I choose between the different copper alloys for my project?
A The right alloy depends on your application requirements. For maximum electrical conductivity, choose C101 or C110. For easy machining of complex parts, choose C360. For wear-resistant bearing applications, choose C932. For a balance of formability, strength, and corrosion resistance, choose C260.
Q Can these copper alloys be used in custom precision machined parts?
A Absolutely. All the copper alloys in our material library are suitable for custom precision machining. Each alloy offers distinct advantages — from the free-cutting performance of C360 to the high-purity requirements met by C101 — allowing us to match the right material to your specific design and performance needs.
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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