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:
Dec. 17, 2013
Filed:
Sep. 03, 2009
Cornel Abratis, Hamburg, DE;
Lutz Ernenputsch, Krefeld, DE;
Wilfried Klos, Grevenbroich, DE;
Hans-joachim Krautschick, Solingen, DE;
Michael Sachtleber, Korschenbroich, DE;
Cornel Abratis, Hamburg, DE;
Lutz Ernenputsch, Krefeld, DE;
Wilfried Klos, Grevenbroich, DE;
Hans-Joachim Krautschick, Solingen, DE;
Michael Sachtleber, Korschenbroich, DE;
Outokumpu Nirosta GmbH, Krefeld, DE;
Abstract
A stainless steel and a flat cold product produced therefrom, which can be easily produced in an economical manner. A steel according to the invention, in the cold-rolled state, has a microstructure with 5-15% by volume δ-ferrite and austenite as the remainder. It contains (in % by weight): C: 0.05-0.14%, Si: 0.1-1.0%, Mn: 4.0-12.0%, Cr: >17.5-22.0%, Ni: 1.0-4.0%, Cu: 1.0-3.0%, N: 0.03-0.2%, P: max. 0.07%, S: max. 0.01%, Mo: max. 0.5%, optionally one or more elements from the group consisting of Ti, Nb, B, V, Al, Ca, As, Sn, Sb, Pb, Bi, and H wherein Ti: max. 0.02%, Nb: max. 0.1%, B: max. 0.004%, V: max. 0.1%, Al: 0.001-0.03%, Ca: 0.0005-0.003%, As: 0.003-0.015%, Sn: 0.003-0.01%, Pb: max. 0.01%, Bi: max. 0.01%, H: max. 0.0025%, and remainder Fe and unavoidable impurities.