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:
Nov. 15, 1988
Filed:
Aug. 21, 1986
John J Eckenrod, Coraopolis, PA (US);
Geoffrey O Rhodes, Saxonburg, PA (US);
Kenneth E Pinnow, Pittsburgh, PA (US);
William E Royer, Lafayette, NY (US);
Crucible Materials Corporation, Pittsburgh, PA (US);
Abstract
A resulfurized, chromium-nickel austenitic stainless steel having improved machinability resulting from low carbon and low nitrogen contents in combination with manganese and sulfur additions. The composition of the steel consists essentially of, in weight percent, carbon plus nitrogen total up to 0.065, preferably up to 0.040 or 0.056, chromium 16 to 30, preferably 17 to 19, nickel 5 to 26, preferably 6 to 14, sulfur 0.10 to 0.45, preferably 0.10 to 0.25, more preferably 0.25 to 0.45, manganese 0.75 to 2.0, silicon up to 1, phosphorus up to about 0.20, molybdenum up to 1.0 and copper up to 1.00, and balance iron and incidental impurities.