Stainless steel specialised drills are suitable for machining high hardness materials, mainly because stainless steel specialised drills have high hardness and abrasion resistance, and are able to cope with the machining needs of high hardness materials. The following are some types of stainless steel drills that are suitable for machining hard materials:

1. Tungsten steel drill bit: Tungsten steel drill bit is a kind of high hardness drill bit for stainless steel, which is mainly used for machining high hardness metal materials, such as steel, stainless steel and so on. With high wear resistance and thermal stability, tungsten steel drill bits can maintain stable working performance in high load and high speed machining.

2. Diamond coated drill: Diamond coated drill is a kind of special drill for stainless steel made by super hard diamond coating technology, which has very high hardness and wear resistance. Diamond coated drill bits are suitable for processing extremely hard materials, such as ceramics, glass, silicon carbide, etc., and can maintain stable cutting performance at high speeds and high temperatures.

3. High-speed steel drills: High-speed steel drills are a kind of stainless steel special drills with high hardness and high wear resistance, suitable for processing medium hardness metal materials. HSS drills can maintain stable cutting performance in high-speed cutting and have a long service life.

In general, the hardness and wear resistance of stainless steel drill bits determine their suitability for processing hard materials. Choosing the right stainless steel special drill bit can improve the processing efficiency, extend the tool life, reduce costs, is one of the important tools for processing high hardness materials.