The difference between HSS drill bits and carbide drill bits

1. Different materials

carbide is a kind of ultra-high hardness and very wear-resistant material, the only drawback is easy to break, but the wear resistance is extremely strong, a good carbide material is very easy to use, and the price is very high.

HSS drill bits are not easy to break and wear resistance, etc. They are very good. Generally speaking, HSS drill bits in factories in need are actually more cost-effective, because the unit price is low and the quality is fair. It is better to use HSS drills, unless you encounter extremely hard materials, HSS drills can not be processed, and then choose carbide drills.

Different physical properties

carbide drill bits generally refer to hard carbide drill bits, which can be divided into integral, welded, indexable blade type and interchangeable head type. The main components of the alloy are tungsten carbide, cobalt, etc. The hardness is relatively high, generally above HRC90 degrees, which is suitable for processing heat-treated steel and difficult-to-process materials. The hardness of the carbide drill itself is high, and the hardness of the product after heat treatment will increase, so carbide drills must be used.

The material of the HSS drill bit is a complex carbide containing carbide forming elements such as tungsten, molybdenum, chromium, vanadium, and cobalt. The total amount of carbideing elements is about 10-25%. It can maintain high hardness even when high heat is generated by high-speed cutting, and the HRC can be above 60.

HSS drills can maintain high hardness even when high heat is generated by high-speed cutting, and the HRC can be above 60. Cemented carbide drill bits have a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance, especially its high hardness and wear resistance, which are basically not maintained even at a temperature of 500 ℃ Change, still very high hardness at 1000 ℃.