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CNC Automotive Parts Milling Aluminum with Chemical Finishing

Custom CNC Milling Components-Aluminum CNC Auto Parts

Material Aluminum
Processing CNC Milling
Surface Finish Polishing
Chemical treatment
Clear lacquer coating
Application CNC aut parts-automobile engine、transmission system
Descriptions

Common CNC Aluminum Material

We use high-grade aluminum alloys for strength, lightweight performance, and durability:

Alloy Type Key Advantages Typical Uses In Automotive
6061 Excellent strength-to-weight ratio, corrosion resistance Structural brackets, engine covers
7075 High tensile strength, wear resistance Performance components, suspension parts


Machining & Processes That Chiheng Serves in Automotive Industry

Our CNC Milling Capabilities

  • 3/4/ 5-axis precision machining
  • Handles complex geometries and intricate cuts
  • Maintains tight tolerances up to ±0.005 mm for precise fit and function

Chemical Metal Finishing Options

  • Anodizing for corrosion protection and color customization
  • Chemical conversion coating for conductivity and paint adhesion
  • Polishing followed by multiple coating options( lacquer coating, epoxy coating, etc) for protection and maintained gloss
  • Passivation for enhanced corrosion resistance
  • Other special coatings tailored to project requirements

Batch Production

  • Flexible runs from single prototypes to large-scale production
  • Consistent quality across all quantities

Custom Workflow

  • Machining and finishing fully tailored to customer CAD designs
  • Ability to match specific surface textures, coatings, and color requirements

Chiheng Maximum Workpiece Dimensions

Parameter Capability
Max Length 1500 mm
Max Width 800 mm
Max Height 500 mm

Applications of Milled CNC Car Parts

Our CNC automotive parts milling services are used across a wide range of vehicle components. The precision, strength, and corrosion resistance make these parts a fit for both OEM and aftermarket needs in the U.S., Europe, Australia global market.

Engine Components

We machine aluminum engine parts like brackets, housings, covers, and mounting plates that can handle engine heat and vibration while staying lightweight.

Transmission Parts

From precision-milled transmission cases to gear housing components, our aluminum machining ensures smooth fitment and reliable performance.

Suspension and Chassis Components

We produce suspension arms, subframe parts, and mounting brackets that combine strength with a weight advantage for better handling and fuel efficiency.

Interior Mechanical Assemblies

Aluminum mechanisms inside dashboards, seat adjustment systems, and steering column fittings benefit from tight tolerances and smooth finishes.

Aftermarket Aluminum Parts

We work with custom shops and performance brands to produce CNC milled aluminum car parts — from decorative to functional — with anodizing or other protective coatings.

Custom Automotive Prototypes

Whether it’s a one-off build or concept testing, our CNC machining with surface treatment delivers accurate prototypes with the same quality you’d expect in production runs.

 


 

What Sets Us Apart

Feature Benefit For You
17+ Years Experience Proven know-how in CNC aluminum parts for cars
In-House Chemical Finishing Faster turnaround, better quality control
Competitive Pricing Direct China factory rates with global shipping
High Precision Engineering Meets strict automotive tolerances
Advanced CNC Machinery 3–5 axis milling, lathe turning center for complex geometries
Ongoing R&D Updated processes to match latest automotive needs

Custom Your Parts Now!

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