Topics CoveredIntroductionPhysical PropertiesMechanical PropertiesFabrication and Heat Treatment FormingApplications
Tungsten has high electrical and thermal conductivity, and low vapor pressure at high temperature. It has high meting point compared to all other metallic materials. It is also considered as a good element for high vacuum technology, furnace construction, glass seals, and dimensional stability. It has an ability to absorb radioactive radiation because it has high density. The following datasheet gives an overview of tungsten.
The physical properties of tungsten are displayed in the following table.
The mechanical properties of tungsten are outlined in the following table.
Fabrication and Heat Treatment
Before forming, tungsten should be preheated at 675°C (1247°F).
Tungsten is used in different kinds of furnace and lighting applications due to its high melting temperature. The thermal expansion coefficient value of tungsten is almost same as that of silicon, thus using the tungsten in brazed mounts for silicon diode chips.