The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2022
Filed:
Mar. 12, 2019
Applicant:
Wieland-werke Ag, Ulm, DE;
Inventor:
Igor Altenberger, Neu-Ulm, DE;
Assignee:
WIELAND-WERKE AG, Ulm, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 9/06 (2006.01); C22C 9/04 (2006.01); C22C 30/02 (2006.01); C22C 30/06 (2006.01);
U.S. Cl.
CPC ...
C22C 9/06 (2013.01); C22C 9/04 (2013.01); C22C 30/02 (2013.01); C22C 30/06 (2013.01);
Abstract
A copper alloy having the following composition (in % by weight) Zn: 17 to 20.5%, Ni: 17 to 23%, Mn: 8 to 11.5%, optionally up to 4% Cr, optionally up to 5.5% Fe, optionally up to 0.5% Ti, optionally up to 0.15% B, optionally up to 0.1% Ca, optionally up to 1.0% Pb, balance copper and unavoidable impurities, wherein the proportion of copper is at least 45% by weight. Further, the ratio of the proportion of Ni to the proportion of Mn is at least 1.7 and the alloy has a microstructure which has inclusions of MnNi and MnNh precipitates.