Assertion: alloy's composition | /r/CapableOf | add bismuth(iiioxide
Facets:
Source sentences:
text: Newer compositions lowered the usage temperature from 450 to 390 °C (840 to 730 °F) by reducing the lead(II) oxide content down from 70%, increasing the zinc oxide content, adding titanium dioxide and bismuth(III) oxide and some other components.