Assertion: alloy's amount | /r/HasProperty | alloyed with most modern steels
Facets:
value: because of its ability
type: CAUSE
value: usually
type: TEMPORAL
Source sentences:
text: Small amounts of manganese are usually alloyed with most modern steels because of its ability to remove unwanted impurities, like phosphorus, sulfur and oxygen, which can have detrimental effects on the alloy.