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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.:

US 10125404 B1

PDFFull Text
Date of Patent:
Nov. 13, 2018

Filed:

Feb. 27, 2014

Method for producing high elastic limit nonmagnetic steel material using an austenitic stainless steel sheet

Applicant:

Nisshin Steel Co., Ltd., Tokyo, JP;

Inventors:

Hiroyasu Matsubayashi, Yamaguchi, JP;

Sadayuki Nakamura, Yamaguchi, JP;

Ryoji Hirota, Yamaguchi, JP;

Assignee:

NISSHIN STEEL CO., LTD., Tokyo, JP;

Attorney:

Clark & Brody

Primary Examiner:

Edward Johnson

Int. Cl.
CPC ...
C21D 8/02 (2006.01); C22C 38/00 (2006.01); C22C 38/58 (2006.01); C22C 38/02 (2006.01); C22C 38/34 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01); C22C 38/40 (2006.01); C21D 6/00 (2006.01); C21D 6/02 (2006.01); C21D 8/04 (2006.01); C21D 9/46 (2006.01);
U.S. Cl.
CPC ...
C21D 8/0205 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/02 (2013.01); C21D 8/0236 (2013.01); C21D 8/0436 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/34 (2013.01); C22C 38/40 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01); C21D 8/0247 (2013.01); C21D 8/0447 (2013.01); C21D 9/46 (2013.01); C21D 2211/001 (2013.01);
Abstract

[Problem] To provide a raw material steel sheet for providing a high strength nonmagnetic austenitic stainless steel material that has a high elastic limit stress and excellent toughness. [Solution to Problem] An austenitic stainless steel sheet containing 0.12% or less of C, from 0.30 to 3.00% of Si, from 2.0 to 9.0% of Mn, from 7.0 to 15.0% of Ni, from 11.0 to 20.0% of Cr, and 0.30% or less of N, and further containing at least one kind of 3.0% or less of Mo, 1.0% or less of V, 1.0% or less of Nb, 1.0% or less of Ti, and 0.010% or less of B, all in terms of percentage by mass, with the balance of Fe and unavoidable impurities, having a component composition having a Ni equivalent of 19.0 or more, having a value of dof 0.40 or more, wherein d (μm) represents an average austenitic crystal grain diameter, and having a property that provides a magnetic permeability μ of 1.0100 or less after subjected to cold rolling with an equivalent strain of 0.50 or more.

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