For example, molybdenum is used as glass electrodes in glass furnaces as electrodes because of the resistance to degradation and glass discoloration. Because Molybdenum has similar durability, but less density, molybdenum boats
are produced for their reliability. Because of tungsten conductivity, it is widely used as a filament in lights, as well as drilling and boring equipment. Tungsten crucibles
are highly valued because of their extraordinarily melting point. Tungsten’s ability to retain conductivity at high temperatures and while maintaining its other physical characteristics even at extreme temperatures make it ideal for tooling applications, x-ray and radiation therapy equipment among many other uses.