Assertion: iridium's use | /r/HasProperty | as hardening agent
Facets:
value: for platinum
type: TRANSITIVE-OBJECT
value: for platinum alloys
type: TRANSITIVE-OBJECT
Source sentences:
text: The main use of iridium is as a hardening agent for platinum alloys.
text: Although its principal use is as a hardening agent for platinum, iridium is also used to make crucibles and devices requiring high temperatures.