1. Special Property: 

Tungsten-nickel-iron alloy has no ferromagnetism besides it has relatively good conductivity and thermal conductivity.

Application: Tungsten-nickel-iron alloys are used to make ignit  ion starters for aero engines.^[1]

2. Special Property:

When the gas temperature is close to or even higher than the melting point of metal tungsten (> 3000 ℃), the tungsten in tungsten copper material evaporates and a large amount of heat is absorbed. It greatly reduces the temperture of ungsten copper on the surface of the part, so that it can be used in the general material which cannot withstand high temperature.

Application: Tungsten-nickel-copper alloys are used to make gyroscope rotors, guiding devices and shock absorbers for spacecraft.

                                     Figure 1.  Gyroscope^[1]

3.  Special Property:

In order to control the high precision measurement of the gyroscope, it is required that the rotor material has a high density and is used in the state of high-speed rotation, which requires the high mechanical properties of the material and high material density. At the same time, in order to avoid the interference of magnetic field in the surrounding environment, non-magnetic materials are required.

Application: Tungsten counterweights are used in flight control systems such as rudders and ailerons. 

                           Figure2. Tungsten counterweights^[2]

4. Special property:

Tungsten itself has high resistance to high temperature, wear, corrosion and impact.

Application: Tungsten alloy coating is used in the blade coating of aero-engine, which can greatly improve the high temperature resistance, wear resistance and corrosion resistance of the engine matrix material.

                                 Figure 3.  Engine shaft^[2]

[1]Zhou w p, lu d m. development status of tungsten and copper materials application and production(2005). Powder metallurgy materials science and engineering,(01):21-25.  

[2]Lu d m, zhou w p. development of tungsten-based high-density alloys in China(2009). China tungsten industry,24(05):107-110.