White tungsten wire becomes brittle once recrystallized at high temperatures and breaks easily under impact or vibration. In some electric light source products requiring high reliability, 3 ~ 5% rhenium is often added into the doping tungsten wire to prevent the fracture of White tungsten wire, which is called tungsten rhenium wire. It can make the transition temperature of tungsten brittle drop to room temperature or below room temperature. This is a curious rhenium effect, and no element has been found to replace rhenium, producing the same effect in tungsten.

White tungsten wire has good acid and alkali resistance at room temperature, but it is easy to be oxidized in humid air, so schetungsten can't be stored in humid environment for too long. In addition, tungsten starts to react with carbon to form tungsten carbide around 1200℃, so attention should be paid to this problem in the hydrogen burning treatment of scheelite; otherwise, tungsten reacts with the graphite lubricant on the surface, scheelite will become brittle and fracture.