Assertion: brass's amount | /r/HasProperty | added
Facets:
value: in order to achieve the desired brass composition
type: PURPOSE
Source sentences:
text: When recycled scrap is used, the percentages of copper and other materials in the scrap must be known so that the manufacturer can adjust the amounts of materials to be added in order to achieve the desired brass composition.
text: A small amount of additional zinc, about 50% of the total zinc required, may be added to compensate for any zinc that vaporizes during the melting operation.
text: When very large amounts of solutes are added, alloy steels may behave like precipitation hardening alloys, which do not soften at all during tempering.
text: When small amounts of tin were added to make bronze you got an ax which was twice as hard and worked well.