1. Steel
One of the main materials of non-magnetic drill collars is steel, and common materials include high-speed steel, tool steel, etc. Non-magnetic drill collars made of steel have the characteristics of wear resistance, high hardness, and good toughness, and are widely used in metal processing, drilling and other fields.

2. Cemented carbide
Cemented carbide is one of the common materials for non-magnetic drill collars, which is made of metals such as tungsten and cobalt. The characteristics of cemented carbide are high hardness, high strength, corrosion resistance, etc., and are suitable for materials with higher processing difficulty.

3. Ceramic
Ceramic is another common material for non-magnetic drill collars, which has excellent high temperature, wear resistance, corrosion resistance, and long service life. However, due to the poor toughness of ceramics, fractures may occur during the processing process.

4. Other materials
In addition to the above three main materials, non-magnetic drill collars can also use other materials, such as polymers, glass fibers, etc. Polymer non-magnetic drill collars are mainly used to process non-metallic materials such as glass and plastics, and glass fiber non-magnetic drill collars are suitable for processing glass fiber reinforced plastics, etc.

In summary, the material of non-magnetic drill collars should be determined according to the specific application field and processing materials, and its application materials are also constantly developing and improving. In the industrial field, choosing the right non-magnetic drill collar material can improve processing efficiency, reduce tool wear and other problems, and improve production efficiency.
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