FIELD: metallurgy.
SUBSTANCE: invention refers to metallurgy field and can be used for manufacturing of watchcases, ballpoint and fountain pens, coins. To increase durability the alloy has the following composition, wt %: copper 16.0-18.0; nickel 1.6-1.8; indium 0.3-0.4; titanium 0.001-0.002; gallium 0.3-0.4; silver - the rest. The ultimate tensile strength of alloy is approximately 70 kgf/mm2.
EFFECT: upgrading of alloy strength.
1 tbl
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Authors
Dates
2009-11-27—Published
2008-12-04—Filed