Assertion: beryllium | /r/ObjectUse | used as alloy
Facets:
value: with copper
type: OTHER
value: mostly
type: DEGREE
Source sentences:
text: Beryllium is mostly used as an alloy when combined with elements like copper, nickel and aluminum, it forms materials that are lighter, tougher and more corrosion resistant than similar alloys.
text: Beryllium is used in alloys with copper.