Aluminum CNC machining is one of the most widely used manufacturing processes in modern industries. Thanks to its excellent machinability, lightweight properties, and cost efficiency, aluminum is often the first choice for CNC machined parts.
In this guide, we explain:
Why aluminum is ideal for CNC machining
Common aluminum grades for CNC machining
CNC machining cost for aluminum parts
Typical applications across industries
This article helps engineers and buyers choose the right aluminum material while optimizing CNC machining cost.
Aluminum offers a unique balance of performance and cost in CNC machining manufacturing.
Excellent machinability (faster cutting speeds)
Lightweight but strong
Corrosion resistance
Good thermal and electrical conductivity
Lower CNC machining price compared to steel
Because of these advantages, aluminum CNC machining is widely used in both prototype and production machining services.
Different aluminum grades affect CNC machining cost, strength, and performance.
Excellent machinability
Good strength-to-weight ratio
Widely available in China CNC machining shops
Cost-effective for CNC machining services
Best for:
CNC machine parts, automotive CNC machining, industrial components
Much stronger than 6061
Lower corrosion resistance
Higher CNC machining price
Best for:
CNC motorsport, aerospace, high-load custom machined parts
Excellent corrosion resistance
Moderate machinability
Good for sheet-based CNC parts
Best for:
Marine components, enclosures, custom CNC parts
High strength
Lower corrosion resistance
Higher machining cost
Best for:
Aerospace and high-performance applications
Aluminum CNC machining is generally more affordable than steel CNC machining or stainless steel CNC machining.
Aluminum grade
Part complexity
Tolerance requirements
Machining process (3 axis, 4 axis, 5 axis CNC machining)
Order quantity
Because aluminum cuts faster and causes less tool wear, it significantly reduces CNC machining cost per hour.
| Factor | Aluminum CNC Machining | Steel CNC Machining |
|---|---|---|
| Machinability | Excellent | Moderate |
| Weight | Light | Heavy |
| CNC Machining Cost | Lower | Higher |
| Tool Wear | Low | High |
| Typical Use | Lightweight parts | Structural parts |
For cost-sensitive projects, aluminum CNC machining is often the better option.
Best for complex geometries
Widely used for CNC milling parts
Supports 3 axis, 4 axis, and 5 axis CNC machining
Ideal for round aluminum parts
Lower CNC machining price
High efficiency for turning parts
Used for complex aluminum parts
Higher price but fewer setups
Better surface finish
Choosing the right process helps optimize total CNC machining cost.
Aluminum supports a wide range of finishes:
Anodizing (clear, black, color)
Powder coating
Sandblasting
Brushing
Polishing
Surface finishing affects both appearance and CNC machining price.
Custom auto parts
Engine brackets
Structural components
Lightweight CNC racing parts
High-strength aluminum components
Heat sinks
Enclosures
CNC machine parts
Precision CNC machined aluminum parts
Weight-critical components
Use standard aluminum grades (6061)
Avoid unnecessary tight tolerances
Design parts for 3 axis CNC machining when possible
Increase order quantity
Work with experienced CNC machining manufacturers
These steps ensure cost-effective aluminum CNC machining without compromising quality.
Aluminum 6061 is the most commonly used due to its machinability and cost efficiency.
Yes. Aluminum CNC machining typically has a lower CNC machining cost.
Yes. Aluminum 7075 is suitable for high-strength CNC machined parts.
Yes. China CNC machining manufacturers offer a full range of aluminum CNC machining services.
Aluminum CNC machining offers an ideal balance of performance, precision, and cost. By choosing the right aluminum grade, machining process, and CNC machining service provider, buyers can achieve high-quality parts while keeping CNC machining price under control.
Hey there, I'm Ming!
From MQJM, I'm a CNC machining expert with over 20 years of experience. We provide high-quality and high-precision machining services in China. Ask for a quote for your ongoing or upcoming projects now!
Best Regards, Ming, Co-Founder
