There are three kinds of cemented carbides, of which tungsten, cobalt and titanium are brittle cemented carbides?
[classification of cemented carbide] ISO carbide carbide cutting into 3 categories: P, K and M.1, P class (equivalent to China's YT class) cemented carbide by WC, TiC, and Co composition, also known as tungsten titanium cobalt carbide. This kind of alloy is mainly used for processing steel materials. Common brands are YT5 (mass fraction of TiC is 5%), YT15 (mass fraction of TiC is 15%), with the mass fraction of TiC increased, the mass fraction of cobalt decreased, hardness and wear resistance increased, bending strength decreased. This kind of hard alloy is not suitable for processing stainless steel and titanium alloy.2, K class (equivalent to China's YG class), carbide composed of WC and Co, also known as tungsten cobalt carbide. These alloys are mainly used to process cast iron, nonferrous metals and their alloys. The common grades are TG6 (cobalt mass fraction 6%) and YG8 (cobalt mass fraction 8%). As the mass fraction of cobalt increases, the hardness and wear resistance decrease, and the flexural strength and toughness increase.3, M class (equivalent to China's YW class), carbide is based on WC, TiC, Co, and then added TaC (or NbC) and into. After the addition of TaC (or NbC), the comprehensive properties of cemented carbide were improved. Such cemented carbide can be used for both cast iron and non-ferrous metals, as well as for steel and for high temperature machining
Tungsten titanium cobalt carbide a tungsten titanium cobalt carbide consisting of WC%26mdash, TiC, WC and bonded cobalt metal or a multiphase hard alloy consisting of only WC%26mdash, TiC solid solution and cobalt. Cobalt content of alloy 4% ~ 10%, containing TiC5% ~ 30%, margin of WC, mainly used for cutting steel.Hard alloy with high hardness, strength and toughness, good wear resistance, heat resistance, corrosion resistance and a series of excellent performance, especially high hardness and wear resistance of it, even at a temperature of 500 DEG C also remained unchanged, at 1000 degrees C still have high hardness. There is no such term as brittle cemented carbide.
Cemented carbides are classified into tungsten, cobalt, tungsten, titanium, tungsten, titanium, tantalum and cobalt. Tungsten cobalt carbide knife with: YG6, YG8, YG8N and so on, such carbide cutting tools for processing non-ferrous metals, stainless steel, cast iron and other materials;Tungsten carbide hard alloy knife has: YT5, YT15, etc., this kind of carbide cutting tools for processing steel and other tough materials;Tungsten, titanium, tantalum, cobalt carbide knife with: YW1, YW2, YS25, WS30, etc., this kind of carbide cutting tools for processing heat-resistant steel, high manganese steel, stainless steel and other difficult materials.
