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China Copper CNC Machining Factory: Reliable Suppliers for Precision Copper Components and Alloys

Copper is a premier metal material in CNC machining, renowned for its outstanding thermal and electrical conductivity, corrosion resistance, and excellent ductility. It finds extensive applications across various industries, including electrical and power equipment, automotive, medical, and aerospace sectors, As a leading CNC machining factory in China, Yuanwenyu specializes in providing high-quality CNC machining services that focus on pure copper and a range of high-performance copper alloys. Our state-of-the-art CNC milling, turning, and multi-axis machining technologies ensure the production of copper components that exemplify superior conductivity, thermal performance, and intricate precision, We take pride in being one of the most reliable suppliers in the industry, offering an intelligent production system that supports seamless end-to-end delivery—from rapid prototyping to small and medium-volume production. Partner with us for your copper machining needs and experience excellence in every component we produce
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    Product Details

    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

    What is the difference between Copper 101 and Copper C110?
    Copper 101 (Oxygen-Free Electronic Copper) is the purest commercially available grade with 99.99% Cu, offering maximum conductivity for critical electronic applications. Copper C110 (Electrolytic Tough Pitch Copper) is 99.9% pure and serves as the standard, highly versatile choice for general electrical and conductive applications.
    Why is Copper C932 suitable for bearings and bushings?
    Copper C932 (SAE 660) is a high-leaded tin bronze that offers excellent anti-galling properties, low friction, and high load capacity. This makes it highly resistant to wear when operating against steel surfaces.
    Which copper alloy offers the best machinability?
    Copper 360 (Free-Cutting Brass - C36000) is the industry standard for machinability. It allows for high-speed machining operations, produces clean, small, broken chips, and delivers excellent surface finishes.
    What makes Copper 260 ideal for custom plumbing and electrical parts?
    Copper 260 (Cartridge Brass) is a 70/30 brass that combines superb cold-working properties, reliable strength, and excellent corrosion resistance. This balance of formability and durability makes it perfect for plumbing and electrical connectors.
    How does material selection affect electrical and thermal conductivity?
    Pure coppers like Copper 101 and C110 provide the highest electrical and thermal conductivity. As alloying elements like tin, lead, or zinc are added (as in bronze and brass) to improve strength or machinability, conductivity decreases.

    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.

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