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Aluminum CNC Machining Services from China: Trusted Suppliers & Factory for Precision Parts Production

Aluminum is a highly sought-after metal in the CNC machining industry, and our factory in China specializes in producing high-quality aluminum parts. Renowned for its low density, high strength, excellent hardness, and remarkable resistance to heat and corrosion, aluminum is widely used across various sectors. Our popular aluminum alloys, including 6061-T651, 7075-T651, and 2024-T351, are particularly favored in the aerospace, medical, and automotive industries due to their exceptional performance and cost-effectiveness, As leading suppliers in the CNC machining field, we leverage over a decade of experience and state-of-the-art technology to manufacture aluminum components with precise tolerances. Our comprehensive manufacturing capabilities encompass CNC milling, turning, and multi-axis machining, as well as turn-mill compound machining. With our intelligent production management and robust supply chain networks, we efficiently fulfill customer needs ranging from rapid prototyping to small and medium-volume production, ensuring cost-effective solutions for all your aluminum machining requirements
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    Product Details

    We maintain a complete inventory of aerospace-grade and commercial-grade aluminum alloy materials to ensure the best performance and cost suitability:

    ⚙ Common Aluminum Alloy Material Library
    Most Versatile
    6061-T6

    The most versatile structural alloy, offering excellent machinability, weldability, and corrosion resistance. Suitable for most mechanical components, tooling fixtures, and enclosures.

    Machinability Weldability Corrosion Resistance Enclosures
    Ultra-High Strength
    7075-T6

    An ultra-high-strength aluminum alloy with strength comparable to many steels. An ideal choice for aerospace, high-performance sporting goods, and critical load-bearing structures.

    Aerospace High Strength Sporting Goods Load-Bearing
    Marine Grade
    5052-H32

    Offers excellent corrosion resistance (especially in marine environments) and formability. Commonly used for ship and vehicle trim, and electronic enclosures.

    Marine Corrosion Resistance Formability Electronics
    High Fatigue Strength
    2024-T3/T4

    Provides good fatigue strength and strength-to-weight ratio. Widely used in aircraft structural components, truck wheels, and other high-strength applications.

    Fatigue Strength Aircraft Structures Truck Wheels Lightweight
    Precision Tooling
    MIC-6 / Cast Aluminum Tooling Plate

    A precision-ground, pre-hardened plate with stress-free internal structure, ideal for precision substrates, fixtures, and molds.

    Precision Ground Stress-Free Fixtures Molds
    ? Frequently Asked Questions
    Q What is the difference between 6061-T6 and 7075-T6 aluminum alloys?
    6061-T6 is the most widely used general-purpose structural alloy, valued for its excellent machinability, weldability, and corrosion resistance at a moderate cost. 7075-T6 offers significantly higher strength — comparable to many steels — making it the preferred choice for aerospace, defense, and high-performance applications where weight savings and maximum strength are critical.
    Q Which aluminum alloy is best suited for marine or outdoor environments?
    5052-H32 is the top choice for marine and outdoor applications due to its outstanding corrosion resistance, particularly in saltwater environments. It also offers excellent formability, making it ideal for ship components, vehicle trim panels, and outdoor enclosures.
    Q When should I choose 2024-T3/T4 over other aluminum alloys?
    2024-T3/T4 is the preferred alloy when fatigue resistance and a high strength-to-weight ratio are the primary requirements. It is widely used in aircraft structural components and truck wheels where repeated cyclic loading is a concern. Note that it has lower corrosion resistance compared to 6061 or 5052, so protective coatings are often recommended.
    Q What makes MIC-6 Cast Aluminum Tooling Plate different from standard aluminum plate?
    MIC-6 is a specially cast and precision-ground aluminum plate engineered for dimensional stability. Unlike standard rolled aluminum, it has a stress-free internal structure that prevents warping during machining. This makes it the ideal material for precision fixtures, substrates, molds, and any application requiring tight flatness tolerances.
    Q Can aluminum alloys be welded, and which grades are most weldable?
    Most aluminum alloys can be welded using MIG or TIG processes, but weldability varies significantly by grade. 6061-T6 and 5052-H32 are among the most weldable alloys and are commonly joined in structural and marine fabrication. 7075-T6 and 2024-T3/T4 are generally considered difficult to weld due to their high zinc and copper content, which can cause cracking — mechanical fastening or bonding is often preferred for these grades.
    Q How do I select the right aluminum alloy for my CNC machining project?
    Selecting the right alloy depends on your application's key requirements: for general-purpose parts with good machinability, 6061-T6 is the standard choice; for maximum strength in aerospace or high-load applications, choose 7075-T6; for marine or corrosion-prone environments, go with 5052-H32; for fatigue-critical aircraft structures, consider 2024-T3/T4; and for precision tooling plates and fixtures requiring flatness, MIC-6 is the optimal solution. Our engineering team is available to help you make the best material selection for your specific 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.

    • 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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