What should be noted tungsten material

Tungsten alloy metals in the interstitial impurities, microstructure and alloying elements, as well as plastic processing and surface condition of the tungsten material plastic - brittle transition temperature has a significant impact. In addition to rhenium tungsten material can significantly reduce plastic - brittle transition temperature, the other alloying elements on the lower ductility - brittle transition temperatures with little success. Poor oxidation resistance of tungsten oxide and molybdenum similar characteristics, will take place at more than 1000 ℃ tungsten trioxide volatile, have a "disastrous" oxidation. Must be protected in a vacuum or under an inert atmosphere, if used in high temperature oxidizing atmosphere, you must add a protective coating high temperature Tungsten alloys material.