High density tungsten alloy is a kind of alloy material that is based on tungsten (tungsten content is generally 80%~98%), adding a small amount of Ni, Fe, Cu, Co, Mo, Cr and other elements, the density of high density tungsten alloy is up to 15.20~18.70g/cm3, which is also known as high proportion alloy or high density alloy material. Tungsten heavy alloy is mainly divided into two series: W-Ni-Fe and W-Ni-Cu or even W-Ni-Fe-Cu. In contrast, W-Ni-Fe alloy has better mechanical performance and plays a great role in the defense industry and national economy, it is one of the most important new military materials, and gradually extended to the civilian industry.

High density tungsten alloy has high density, high strength, high hardness (affectionately referred to as the 3 H alloy) and good ductility, electrical conductivity and thermal conductivity and other comprehensive performance and plays an important role in the manufacture of weapons, and then has been widely used in the defense industry, aerospace and civil industries (such as electrical industry, drilling industry etc.). High density alloy material becomes a kind of civil and military alloy material.