tungsten-uses

Compounds
Probably the most important compound of tungsten is tungsten carbide (WC). Tungsten carbide has a very high melting point of 2,780°C (5,000°F). It is the strongest structural material. It is used to make parts for electrical circuits, cutting tools, cermets, and cemented carbide. A cermet is a material made of a ceramic and a metal. A ceramic is a clay-like material. Cermets are used where very high temperatures occur for long periods of time. For example, the parts of a rocket motor or a jet engine may be made from a cermet.

A cemented carbide is made by bonding tungsten carbide to another metal. The product is very strong and remains strong at high temperatures. Cemented carbides are used for rock and metal cutting. They can operate at 100 times the speed of similar tools made of steel.
Health effects
Tungsten has no essential role in the health of plants, humans, or animals. In moderate amounts, it also presents virtually no health danger.