Title: Modified brass alloys with improved stress relaxation resistance

Abstract: An alloy system which exhibits improved resistance to stress relaxation at elevated temperatures utilizes additions of silicon or tin or mixtures of silicon and tin to a copper-zinc base to attain the stress relaxation performance. The composition and processing of this alloy system maintains at least 90% by weight alpha-phase within the alloy.

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Inventors: Smith, Jr., Warren F. (Branford, CT, US)
Vitek, John M. (Cheshire, CT, US)
Shapiro, Eugene (Hamden, CT, US)

Application Number: 920131
Filing Date: 1978-06-28
Publication_date: 1980-06-03
Assignee: Olin Corporation (New Haven, CT)
Primary Class(es): 148/433
Other Classes:
US Patent Ref:

Re19915	Apr, 1936	Freema, Jr.	75/160.
1040027	Oct, 1912	Schmid	75/157.
1764571	Jun, 1930	Lytle	75/157.
2007008	Jul, 1935	Staples	75/160.
2075004	Mar, 1937	Bassett	75/160.
2133847	Oct, 1938	Crampton et al.	75/157.
2394673	Feb, 1946	Edmunds	75/157.
3190751	Jun, 1965	Blazek	75/157.
4014716	Mar, 1977	Cabo et al.	148/11.

Other Refs: 50-7851927829 of

Jun, 1975	JP
, 1911	GB

Primary Examiner: Rutledge, L. Dewayne
Assistant Examiner: Skiff, Peter K.
Attorney: Weinstein; Paul, DiPalma; Victor A.