Assertion: antimony | /r/HasProperty | mixed with lead
Facets:
value: between 5%
type: OTHER
Source sentences:
text: For sailboats, lead keels are used as counterweights, ranging from 600 lbs to over 8000 lbs; to improve hardness and tensile strength of the lead keel, antimony is mixed with lead between 2% and 5% by volume.
text: The crude product contains 94 to 95 per cent, antimony mixed with iron, sulphur, lead and arsenic.