Assertion: copper tungsten | /r/HasProperty | good choice
Facets:
value: due to its low cost
type: CAUSE
value: for a vacuum contact
type: PURPOSE
value: due to resistance
type: CAUSE
Source sentences:
text: Copper tungsten is a good choice for a vacuum contact due to its low cost, resistance to arc erosion, good conductivity, and resistance to mechanical wear and contact welding.