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What Are The Main Materials For CNC Machining

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What Are The Main Materials For CNC Machining

The main materials for CNC machining are as follows:

1. Aluminum alloy 6061

6061 aluminum alloy is a high-quality aluminum alloy product produced by heat treatment and pre-stretching process. it has more characteristics of magnesium and silicon alloys. Material advantages: It has excellent processing performance, excellent welding characteristics and electroplating properties, good corrosion resistance, high toughness, no deformation after processing, compact material without defects, easy polishing, easy coloring film, and excellent oxidation effect.

2. 7075 aluminum alloy

7075 aluminum alloy is a cold-treated forging alloy with high strength, far better than mild steel. 7075 is one of the strongest alloys commercially available. Material advantages: General corrosion resistance, good mechanical properties . Smaller grains allow for better deep drilling performance, enhanced tool wear resistance and distinctive thread rolling.

3. Copper

Pure copper (also known as red copper) is a kind of ductile metal with excellent electrical conductivity and its surface is rose red. It is not pure copper, it contains 99.9% copper, and some other elements are added to improve the surface and performance. Material advantages: It has good electrical and thermal conductivity, ductility, deep drawability and corrosion resistance.

The electrical and thermal conductivity of copper is second only to silver, and it is widely used in the production of electrical and thermal equipment. Copper has good corrosion resistance in the atmosphere, sea water and some non-oxidizing acids, alkali, salt solution and various organic acids (acetic acid, citric acid), and is used in the chemical industry.

It has good weld ability, and can be made into various semi-finished and finished products through cold and thermoplastic processing. In the 1970s, the output of red copper exceeded the total output of all other copper alloys.

4. Brass

Brass is a copper-zinc alloy, and brass composed of copper and zinc is called ordinary brass. Material advantages: It has high strength, high hardness and strong chemical corrosion resistance.

The mechanical properties of cutting processing are also outstanding. Brass has strong wear resistance. Special brass is also called special brass, which has high strength, high hardness and strong chemical corrosion resistance.

The mechanical properties of cutting processing are also outstanding. The seamless copper tube drawn from brass is soft and wear-resistant.

5. No. 45 steel

45 steel is the name in GB, also known as "oil steel". This steel has high strength . Material advantages: It has high strength . After proper heat treatment, it can obtain certain toughness, plasticity and wear resistance. The material source is convenient, and it is suitable for hydrogen welding and argon arc welding.

6. Introduction of 40Cr steel

40Cr is the standard steel grade of my country's GB, and 40Cr steel is one of the most widely used steels in the machinery manufacturing industry. Material advantages: It has good comprehensive mechanical properties, good low temperature impact toughness and low notch sensitivity. The harden ability of the steel is good, and this steel is also suitable ,high-frequency quenching in addition to quenching and tempering. Good cutting performance.

7. Introduction of Q235 steel

Q235 steel is a kind of carbon structural steel, and the Q in its steel number represents the yield strength. Usually, the steel is used directly without heat treatment. Material advantages: As the thickness of the material increases, the yield value will decrease. Due to the moderate carbon content, the comprehensive performance is better, and the strength, plasticity and welding properties are well matched, and the most widely used.

8. SUS304 steel

SUS304 refers to 304 stainless steel, which has the characteristics of good processing performance and high toughness. Material advantages: It has good corrosion resistance, heat resistance, corrosion resistance, low temperature strength and mechanical properties, good hot work ability such as stamping and bending, no heat treatment hardening phenomenon, and no magnetism.


It can replace FRP, reduce the weight by 25%-30%, and is stronger than FRP. It can be used for machine shells, bumpers, roofs, hoods, etc.

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