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The difference between cemented carbide and tungsten steel
The difference between cemented carbide and tungsten steel
(1) Cemented carbide is made of hard compounds of refractory metals and bonded metals by powder metallurgy process. It is an alloy material with extremely high hardness. High-quality alloy has 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, even at a temperature of 500 ° C remain largely unchanged. It still has high hardness at 1000°C. A ceramic that has some of the properties of a metal.
(2) Tungsten steel is also called tungsten-titanium alloy or high-speed steel or tool steel. The hardness is Vickers 10K, second only to diamond. The term "sintered composite" means a sintered composite consisting of at least one metal carbide. Tungsten steel and cemented carbide have high hardness, wear resistance, strength and toughness, heat resistance and resistance. A series of excellent properties, such as corrosion. The advantage of tungsten steel lies in its high hardness and wear resistance. Even at 1000°C, it still has high hardness. Yi can be called the second diamond. The grain size of the carbide composition (or phase) is usually between 0.2-10 microns.
(3) Tungsten steel is made by adding ferrotungsten to molten steel through steelmaking. The process is made by smelting tungsten raw materials, also known as high-speed steel or tool steel, and its tungsten content is generally 15-25%. Cemented carbide is sintered with cobalt or other bonding metals by powder metallurgy. The content of tungsten is usually higher than 80%. That is to say, all alloys whose hardness exceeds HRC65 can be called cemented carbide.
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