STRESS RELAXATION RESISTANT BRASS

An alpha brass (copper/zinc alloy with less than 39%, by weight, of zinc) stock alloy has controlled additions of nickel, tin and phosphorous. The combination of nickel and tin increase resistance of the alloy to elevated temperature stress relaxation. As a result, spring contacts formed from alloys...

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Bibliographic Details
Main Authors BREEDIS, JOHN, F, DEPPISCH, CARL, L, CARON, RONALD, N
Format Patent
LanguageEnglish
French
German
Published 02.01.2003
Edition7
Subjects
ALLOYS
BASIC ELECTRIC ELEMENTS
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS
CHEMISTRY
CURRENT COLLECTORS
ELECTRICITY
FERROUS OR NON-FERROUS ALLOYS
LINE CONNECTORS
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
METALLURGY
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:An alpha brass (copper/zinc alloy with less than 39%, by weight, of zinc) stock alloy has controlled additions of nickel, tin and phosphorous. The combination of nickel and tin increase resistance of the alloy to elevated temperature stress relaxation. As a result, spring contacts formed from alloys of the invention maintain a higher percentage of initially imposed stress at elevated temperatures, in the range of 125° C. to 150° C., for significantly longer times than other brass alloys of comparable strength.
Bibliography:Application Number: EP19990956840