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:
Oct. 08, 1985
Filed:
Jun. 29, 1984
Applicant:
Inventors:
Thomas H McCunn, Lower Burrell, PA (US);
John P Ziemianski, Avonmore, PA (US);
Assignee:
Allegheny Ludlum Steel Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ; C21D / ;
U.S. Cl.
CPC ...
148 / ;
Abstract
A method is provided for producing a nickel-chromium-molybdenum austenitic stainless steel in heavy section sizes and in welded article form substantially free of second phase precipitation from annealing and welding temperatures. The method includes providing nitrogen additions and annealing at temperatures of less than 2100.degree. F., preferably less than 2000.degree. F.