PERFEZIONAMENTO NELLE LEGHE DI OTTONE E PROCEDIMENTO DI PRODUZIONE

PERFEZIONAMENTO NELLE LEGHE DI OTTONE E PROCEDIMENTO DI PRODUZIONE

The alloy contains by wt. 0.05-2 (0.1-1.0)% Sn and 0.05-3 (0.1-1.5) % Si; with the combined total of Sn + Si being \-0.3%. The alloy also contains 20-34 (20-32), more pref. 26-31 % Zn and the balance in Cu. The alloy has good bend formability and pref. is used in the worked condition, with a grain s...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: EUGENE SHAPIRO, WARREN F.SMITH,JR, JOHN M.VITEK
Format: Patent
Sprache:ita
Schlagworte:
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:The alloy contains by wt. 0.05-2 (0.1-1.0)% Sn and 0.05-3 (0.1-1.5) % Si; with the combined total of Sn + Si being \-0.3%. The alloy also contains 20-34 (20-32), more pref. 26-31 % Zn and the balance in Cu. The alloy has good bend formability and pref. is used in the worked condition, with a grain size of approx. 0.005-0.050 mm. The alloy may additionally contain a grain refining addn. and/or an element to promote easy machining. A single phase alloy consists of 0.05-2.0% Sn, 26-34% Zn or 0.05-2.0% Sn, 0.05-3% Si (with % Sn + % S, >0.3%), 20-34% Zn balance Cu. The alloy is used for spring connectors. Resistance to stress relaxation at elevated temperatures improved by additions of Sn and/or Si. At least 90% alloy is alpha phase and in the worked condition grain size is 0.005-0.05 mm. The preferred alloy contains 0.1-1.0 % each of Sn and Si, 26-31 % Zn balance Cu.