Assertion: tin bronze | /r/HasProperty | hard
Facets:
value: very
type: DEGREE
Source sentences:
text: Also unique for Chinese bronzes is the consistent use of high-tin bronze (17-21% tin), which is very hard and breaks under excess stress, whereas other cultures preferred lower tin bronze (usually 10%), which bends instead.
text: The tin bronzes are strong and hard and have very high ductility.