Tungsten, tungsten alloys and tungsten alloy member using the discharge lamp, and a magnetron transmitting tube

Object of the present invention is to obtain a non-radioactive material is used as a thorium-tungsten alloy also has the same or higher than thoriated tungsten alloy emission characteristics, and to provide the use of a tungsten alloy discharge lamp, and a magnetron transmitting tube tube. Tungsten alloy of the present invention, in terms of HfO2 contains Hf component in a range of more than 0.1wt% 3wt% or less.