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What's tungsten carbide?
Date:2020-07-09 Visits:4

Tungsten carbide is produced either by bonding one tungsten atom with a single carbon atom (represented by the chemical symbol WC) or two tungsten atoms with a single carbon atom (W2C). It is done by heating tungsten powder with carbon at temperatures of 2550°F to 2900°F (1400°C to 1600°C) in a stream of hydrogen gas.

According to Moh's hardness scale (a measure of one material's ability to scratch another), tungsten carbide has a hardness of 9.5, only slightly lower than diamond. For this reason, tungsten is sintered (a process that requires pressing and heating the powder form at high temperatures) to make products used in machining and cutting.

The result is materials that can operate in conditions of high temperature and stress, such as drill bits, lathe tools, milling cutters, and armor-piercing ammunition.

Cemented carbide is produced using a combination of tungsten carbide and cobalt powder. It is also used to manufacture wear-resistant tools, such as those used in the mining industry. The tunnel-boring machine that was used to dig the Channel Tunnel linking Britain to Europe was, in fact, outfitted with almost 100 cemented carbide tips.