The Advantages, Disadvantages And Differences Of High Speed Steel And Cemented Carbide

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. 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 RCGT Insert 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 firing at high temperature and high pressure using cobalt, molybdenum, nickel, etc. as binders. The content of high-temperature carbides in cemented carbide exceeds that of high-speed steel, with high hardness (HRC75-80) and SNMG Insert 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.

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