What’s Drfference Between Carbide And HSS?

High-speed steel: It is high-carbon and high-alloy steel. According to chemical composition, it can be divided into tungsten series and molybdenum series steel, and according to cutting performance, it can be divided into ordinary high-speed steel and high-performance high-speed steel. High-speed steel must be strengthened by heat treatment. In the quenched state, the iron, chromium, part of tungsten and carbon in the high-speed steel form extremely hard carbides, which can improve the wear resistance of the steel (hardness can reach HRC64-68). The other part of tungsten dissolves in the matrix and increases the red hardness of the steel. The red hardness of high-speed steel can reach 650 degrees. High-speed steel has good strength and toughness. After sharpening, the cutting edge is sharp and the quality is stable. It is generally used to manufacture small, complex-shaped tools.

Cemented carbide: It is a powder of micron-order refractory high-hardness metal carbides, which is made by using cobalt, molybdenum, nickel, etc. as binders and firing at high temperature and pressure. The content of high-temperature carbide in cemented carbide exceeds that of high-speed steel, with high hardness (HRC75-80) and good wear resistance. The red hardness of cemented carbide can reach 800-1000 degrees. The cutting speed of cemented carbide is 4-7 times higher than that of high-speed steel. High cutting efficiency. The disadvantages are low bending strength, poor impact toughness, high brittleness, low impact resistance and low vibration resistance.

  1. The composition of the two materials is different: the former is WC+Co+TiC, etc., the latter is generally C+Cr+W+Mo+v, etc.
  2. The forming method is generally different: cemented carbide is a powder metallurgy process (of course, some are powder metallurgy high speed steel)
  3. Different hardness: cemented carbide has high hardness, especially at high temperature, but high-speed steel has better toughness
  4. The cutting speed that can withstand is different: because of the high red hardness, it can withstand higher cutting speeds, and high-speed steel is no longer high-speed now
  5. The scope of application is different: the general tool material is cemented carbide, and high-speed steel is used in situations such as complex and difficult to form or requiring very sharp and high toughness

HUANA Only choose Ultrafine particles To Make Carbide End Mill

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