What Is the Thermal Expansion Coefficient of Tungsten Wire?

The thermal expansion coefficient of tungsten wire is relatively low, which makes it stable at high temperatures. Typically, the linear expansion coefficient of tungsten is approximately 4.5 x 10^-6/°C over the temperature range of 25°C to 1000°C. This means that within this temperature range, the length of the tungsten wire increases by a factor of 4.5 x 10^-6 for every 1 degree Celsius increase. Due to its low thermal expansion, tungsten wire is often used in high-temperature environments, such as light bulbs, vacuum equipment, electron tubes, and high-temperature furnaces.