+86-13928348837
China Copper CNC Machining Factory: Premium Suppliers for High-Performance Copper Components
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 Corrosion Resistance
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)
Standard for 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
What is the difference between Copper 101 and Copper C110?
Copper 101 (Oxygen-Free Electronic Copper) is the purest grade at 99.99% Cu, making it ideal for highly sensitive electronic and vacuum applications. Copper C110 (Electrolytic Tough Pitch) is 99.9% Cu and is the most widely used grade for general electrical and conductive applications such as busbars, connectors, and electrical components.
Which copper alloy is best for high-volume machined parts?
Copper 360 (Free-Cutting Brass, C36000) is the industry standard for machinability. It allows high-speed cutting, produces small broken chips, and delivers excellent surface finishes — making it the top choice for complex, high-volume production parts such as valves, fittings, gears, and screw machine components.
What copper alloy is recommended for bushings and bearings?
Copper C932 (SAE 660 High-Leaded Tin Bronze) is specifically designed for bearing and bushing applications. It offers excellent machinability, anti-galling properties, high load capacity, and low friction — especially when running against steel surfaces.
Is Copper 260 (Cartridge Brass) suitable for decorative and plumbing parts?
Yes. Copper 260 (C26000) is a 70/30 brass known for its excellent corrosion resistance, superb cold-working properties, and attractive appearance. It is widely used in plumbing components, decorative hardware, electrical sockets, and custom machined parts that need both formability and durability.
How do I choose the right copper or copper alloy for my application?
The selection depends on your primary requirements: for maximum electrical conductivity choose C101 or C110; for easy high-speed machining choose C360; for bearing and wear applications choose C932; for corrosion-resistant formed or plumbing parts choose C260. Our team can help recommend the optimal grade based on your specific performance and cost requirements.
Can copper alloys be used in both conductive and structural applications?
Yes. While pure coppers (C101, C110) excel in electrical and thermal conductivity, copper alloys such as Brass C260, Brass C360, and Bronze C932 offer improved mechanical strength, machinability, and wear resistance — making them suitable for structural, mechanical, and precision-engineered components across many industries.
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.
-
Passivation or Chromate Conversion Coating:
-
Powder Coating:
-
Painting:
-
Physical Vapor Deposition (PVD):
Design and Machining Considerations
-
Process Selection:
-
Design Considerations:
-
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.
Ready to Start Your CNC Project?
Send us your drawings to receive professional manufacturing solutions.