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Metal Materials for CNC Machining

The Common Metals Used for CNC Machinng at Beska

At Beska, there is a spectrum of metal materials to create CNC machined components. Different metal materials have various toughness, strength, moisture, and heat resistance. We have collected the properties and applications of the common metal materials used in CNC machining for your reference: aluminum, stainless steel, steel, copper, brass, and zinc. We would like to be your material selection guide if you need any help!

  • CNC Machined Aluminum Parts


Being a popular material in CNC machining, aluminum gets lots of excellent engineering properties. At Beska, we often apply aluminum to create metal machined components with a tight tolerance within ±0.008mm.

The advantages of aluminum CNC machining:

  • Lightweight;
  • Excellent strength-to-weight Ratio;
  • Corrosion resistance;
  • Bending workability;

Because of these excellent properties, aluminum machined parts have popularity in the industries of automotive, aerospace, medical, and electronics.

Different Aluminum Series Used in CNC Machining:

Aluminum 2024-T3  •Aluminum 5052

Aluminum 6061         Aluminum 6063

Aluminum 7050         •Aluminum 7075

Aluminum MIC-6



We usually copper alloy to create machined parts instead of pure copper, which is much more difficult to be processed. What makes it popular in different industries relies on its electrical conductivity and corrosion resistance.

The advantages and applications of copper CNC machining:

  • Excellent electrical conductivity;
  • High corrosion resistance;
  • Machinability;

The applications of copper machined parts: heat exchangers, cooling systems, gaskets, transformers, ball floats, terminals, etc.

  • Copper CNC Machined Parts
  • Stainless Steel CNC Machined Parts

Stainless Steel

Being a steel alloy, stainless steel has superior corrosion resistance and enhanced strength that steel does not have. The corrosion resistance level of different grades of stainless steel will also vary. When applying stainless steel in CNC machining, these parts can achieve self-repairing. That’s why stainless steel parts remain extremely resistant to corrosion even if they are scratched.

The advantages of stainless steel CNC machining:

  • Anti-corrosion;
  • Heat resistance;
  • Self-repairing after the machining;

Different types of stainless steel in machining:

  1. Austenitic stainless steels;
  2. Ferritic stainless steels;
  3. Martensitic stainless steels;
  4. Duplex stainless steels;
  5. Precipitation-hardened stainless steel.

The applications of stainless steel machined parts are shafts, bushings, nuts, bolts, screws, gears, food processing equipment, valve fittings, fuel tank, heating tubes, and so on.


Brass is one type of copper alloy, which keep part of the properties of copper. It has been playing an important role in versatile applications from bears to musical instruments. Brass is also a preferred material CNC precision machining because of its high workability.

The advantages and applications of brass CNC machining parts:

  • Anti-corrosion;
  • Excellent conductivity;
  • Highly machinable;
  • Low-friction;
  • Decorative;
  • Eco-friendly;

The applications of brass machined components: gears, bearings, compression fittings, radiators, pipe fittings, valves, etc.


  • Brass CNC Machined Parts
  • CNC Machined Steel Parts


Steel machined parts have a wide application in almost every industry because of their affordability and other properties.

The advantages of steel CNC machining:

  • Weldable;
  • Affordable;
  • Machinable;

Common steel materials for CNC machining:

  1. Steel 1018
  2. Steel 4130
  3. Steel 4140
  4. Steel 1215
  5. Steel 4340


Zinc is considered one of the most cost-effective materials in machining. And it is not often applied in CNC machining because of its brittleness. Instead, we apply it for surface finishing on other metal components including aluminum, iron, and steel.

The advantages of Zinc Alloy CNC machining:

  • Wear resistance;
  • Dimensional stability;
  • Mechanical strength;

The applications of zinc machined parts: vehicle components, housings, fuel systems, etc.


  • CNC Machined Zinc Parts

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