ALLOY FOR MINTAGE

摘要

FIELD: metallurgy. ^ SUBSTANCE: alloy for mintage contains wt %: copper 53.3-56.7, zinc 40.0-43.0, nickel 0.1-0.15, tin 0.1-0.15, lead 3.0-3.5. ^ EFFECT: increased strength, reduced cost of mintage. ^ 1 tbl