Assertion: magnesium sulfate's magnesium | /r/HasProperty | alloyed with few percent of aluminium
Facets:
value: for use as a metal
type: PURPOSE
value: to improve strength
type: PURPOSE
Source sentences:
text: For use as a metal, magnesium is alloyed with a few percent of aluminium, plus traces of zinc and manganese, to improve strength, corrosion resistance and welding qualities, and this alloy is used to save energy by making things lighter.