Assertion: tungsten | /r/ObjectUse | used as catalyst
Facets:
Source sentences:
text: Tungsten is also used as a catalyst to speed up chemical reactions.
text: Tungsten and its alloys are used as light bulb filaments, as the part of x-ray tubes where x-rays are formed, as a catalyst to speed up chemical reactions, as a component of steel in high-speed tools, in turbine blades, in phonographic needles, as welding electrodes, as gyroscope wheels, as counterbalance and fishing weights, in darts, and in golf club components.
text: Tungsten is also used as a catalyst to speed up chemical reactions.