CNC Machining Materials: What Are the Best Choices?


Aluminum serves as one of the most popular materials for CNC machining due to its lightweight nature and excellent machinability. Here are several reasons why aluminum stands out:

  • Lightweight: Weighing only 2.7 g/cm³, aluminum is ideal for applications where weight is a concern.
  • Corrosion resistance: Its natural oxide layer provides significant resistance to corrosion.
  • Good thermal and electrical conductivity: Conducts heat and electricity well, making it suitable for electronics.
  • Cost-effective: Aluminum is more affordable compared to materials like titanium or carbon fiber.

Application examples include aerospace components, automotive parts, and electronic housings. Visit our CNC machining service webpage for more information.

Stainless Steel

Stainless steel provides durability and resistance to a variety of conditions, making it suitable for heavy-duty applications. Key points include:

  • High strength: With a tensile strength ranging from 515 to 827 MPa, stainless steel can withstand significant stress.
  • Corrosion resistance: Adds longevity by resisting rust and oxidation.
  • Heat resistance: Maintains structural integrity even in high temperatures exceeding 500°C.
  • Non-reactive: Ideal for medical and food industries due to its biocompatibility.

Common applications are surgical instruments, industrial machinery, and food processing equipment. Find out more by visiting our CNC machining page.


Brass offers excellent machinability combined with good wear resistance, making it a versatile option. It stands out for:

  • Machinability: One of the easiest metals to machine with minimal tool wear.
  • Corrosion resistance: Particularly resistant to water corrosion.
  • Electrical conductivity: Exhibits good electrical conductivity, second only to copper.
  • Thermal conductivity: Excellent heat dissipation properties.

Applications often include plumbing fittings, electrical components, and decorative items. Visit our CNC machining service for more insights.


Titanium combines lightweight properties with exceptional strength, making it ideal for high-performance applications. Key benefits are:

  • High strength-to-weight ratio: Weighs about 4.5 g/cm³, yet has the strength equal to many steels.
  • Corrosion resistance: Highly resistant to various types of chemical and environmental corrosion.
  • Biocompatibility: Non-toxic and compatible with human tissue, perfect for medical implants.
  • Heat resistance: Retains its properties in temperatures ranging from -253°C to 600°C.

Examples include aerospace components, medical implants, and high-performance automotive parts. Learn more on our CNC machining page.


Plastics in CNC machining provide a balance between cost and performance, making them suitable for a wide array of applications. Important characteristics include:

  • Lightweight: Typically weight around 1-1.4 g/cm³
  • Flexibility: Various options from flexible to rigid materials.
  • Corrosion resistance: Not susceptible to rust or oxidation.
  • Electrical insulation: Excellent for use in electronic enclosures.

Common applications are prototype parts, custom enclosures, and consumer products. For more information, visit our CNC machining services page.

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