Aluminum CNC Machining

CNC Machining in Aluminum Material

At Jiangzhi, we specialize in aluminum CNC machining, offering reliable CNC services for both prototypes and small-batch production. With advanced multi-axis equipment and experienced machinists, we manufacture CNC aluminium parts with high precision, stable quality, and excellent surface finish—strictly based on customer-provided drawings or CAD files. Whether milling, turning, or drilling, we ensure your parts meet demanding tolerance and performance requirements.

Our aluminum CNC service supports a wide range of aluminum grades, including 6061, 7075, and 5052. These aluminium CNC parts are widely used across industries such as aerospace, electronics, automotive, and industrial equipment. From basic manufacturability review to precision Al machining, Jiangzhi ensures your CNC aluminium parts are delivered on time, on spec, and on budget.

Aluminum CNC Machining Capabilities & Options

The following CNC aluminum machining capabilities options are provided as a general reference and can be customized according to part requirements.

Parameter Recommended Range
Max Part Size 1500×1000×500 mm
Color Options Natural
Surface Finishes As-machined / Matte machined / Light polished
Tolerances ±0.02–0.05 mm
Cost ⭐⭐☆☆☆

Machining Aluminum Properties

Aluminium machining is favored for its excellent machinability, low density, and high dimensional stability. It supports high-speed CNC milling and turning with great surface finishes and minimal distortion, making it ideal for precision parts. Common aluminum grades used in CNC aluminum machining include:

  • 6061 – the most widely used grade, offering good strength, corrosion resistance, and workability
  • 7075 – a high-strength aerospace-grade aluminium, ideal for structural and load-bearing parts
  • 5052 – known for excellent corrosion resistance and weldability, often used in marine and enclosures
  • 2024 – strong and fatigue-resistant, used in aerospace and military components
  • MIC 6 – cast aluminum plate with excellent flatness, ideal for tooling and fixtures
Tensile Strength, Yield (MPa) Hardness (HB) Elongation at Break Thermal Conductivity Corrosion Resistance Melting Point CNC Machining Notes
130–570 MPa 35–100 8–18% 150–235 W/m·K Good to Excellent (alloy-dependent) 615–660°C Excellent machinability; use carbide tools

Advantages & Disadvantages of Aluminium CNC Service

Aluminium CNC services are widely used in various industries—but like any process, they come with both strengths and weaknesses. A clear understanding of these can help guide better design and production decisions.

Common Aluminum CNC Parts Surface Treatment

Aluminum is widely used for CNC parts such as housings, brackets, enclosures, heat sinks, and mechanical components. It is lightweight, corrosion-resistant (with proper treatment), and easy to machine, making it suitable for both functional and decorative surface finishes.
Mechanical or electrochemical polishing provides a smooth, reflective surface for decorative or visible components. Polishing enhances aesthetic appeal and can reduce surface roughness for sliding parts.
Anodizing is a common method for aluminum, providing corrosion resistance, surface hardness, and color options. Both clear and colored anodizing are possible. It is widely used for housings, panels, and decorative components.
Used to create matte or textured surfaces that hide machining marks and improve grip. Bead blasting can also prepare the surface for painting or coating.

Aluminum parts can be painted or powder-coated to add color, UV protection, or a durable finish. Pre-treatment such as sandblasting or anodizing improves coating adhesion.

Aluminum can be plated with nickel, chrome, or copper for decorative or wear-resistant surfaces. Pre-treatment, such as zincating or anodizing, is required for plating adhesion.
Used for logos, part numbers, or decorative patterns. Laser marking is precise and permanent, suitable for anodized or bare aluminum surfaces.
Edges and corners can be deburred or chamfered to improve part fit, reduce sharp edges, and prepare surfaces for subsequent coatings.

Aluminum is lightweight, easy to cut, corrosion-resistant, and offers a good balance of strength and cost—ideal for most industries.

6061 is more versatile and weldable; 7075 is harder and stronger, better for high-stress parts. We machine both based on your needs.

Yes. Our aluminum cnc service regularly meets tolerances down to ±0.01 mm with excellent repeatability.

It depends. Many aluminium machined parts look great as-machined, but we also offer finishing like anodizing and polishing.

Absolutely. Send us your CAD file, and our engineers will optimize it for manufacturability and performance.

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