What is high speed tool steel

High speed tool steel has high carbon content and high alloy elements such as W, Mo, Cr, V, Co, etc. and is used as high speed cutting tool. The basic composition alloy series is divided into WMo steel, W-series steel and Co series steel. According to the purpose, it is divided into general-purpose high-speed steel and super-hard high-speed steel, high-alloy steel, ultra-high-strength steel, titanium alloy and high-temperature alloy, which are used to process high-hardness tools.

High speed tool steel has good red hardness, which is used to make tools with high cutting speed, good wear resistance and can keep its cutting performance at high temperature, such as milling cutter, planer, broach, tap cutter, etc., and can also be used for cold working mould, and also high temperature bearing and spring.

In order to ensure the tool has enough toughness and improve its life, the standard stipulates that the microstructure of acid dip low fold and fracture surface should be tested, and the inhomogeneity of eutectic carbide should be tested. In order to ensure that the high speed tool steel has high hardness and wear resistance, all steel should be inspected for decarbonization depth. The steel is difficult to smelting and processing. High speed tool steel is mainly made into bar, module and steel plate, steel strip and steel wire.