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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 9863016 B1

PDFFull Text
Date of Patent:
Jan. 09, 2018

Filed:

Sep. 26, 2013

Super non-magnetic soft stainless steel wire material having excellent cold workability and corrosion resistance, method for manufacturing same, steel wire, steel wire coil, and method for manufacturing same

Applicants:

Nippon Steel & Sumikin Stainless Steel Corporation, Tokyo, JP;

Suzuki-sumiden Stainless Steel Wire Co., Ltd., Tokyo, JP;

Inventors:

Kohji Takano, Hikari, JP;

Yuya Hikasa, Shunan, JP;

Masayuki Tendo, Kimitsu, JP;

Yoshinori Tada, Hikari, JP;

Koichi Yoshimura, Narashino, JP;

Assignees:

NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION, Tokyo, JP;

SUZUKI-SUMIDEN STAINLESS STEEL WIRE CO., LTD., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Deborah Yee

Int. Cl.
CPC ...
C22C 38/58 (2006.01); C22C 38/42 (2006.01); C21D 9/52 (2006.01); C21D 8/06 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01); C21D 6/00 (2006.01); C22C 38/44 (2006.01); C22C 38/52 (2006.01); C21D 1/26 (2006.01);
U.S. Cl.
CPC ...
C21D 9/525 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/007 (2013.01); C21D 6/008 (2013.01); C21D 8/06 (2013.01); C21D 8/065 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/52 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01); C21D 1/26 (2013.01); Y10T 428/12382 (2015.01);
Abstract

This super non-magnetic soft stainless steel wire rod includes, in mass %, C: 0.08% or less, Si: 0.05% to 2.0%, Mn: more than 8.0% to 25.0% or less, P: 0.06% or less, S: 0.01% or less, Ni: more than 6.0% to 30.0% or less, Cr: 13.0% to 25.0%, Cu: 0.2% to 5.0%, N: less than 0.20%, Al: 0.002% to 1.5%, and C+N: less than 0.20%, with the remainder being Fe and inevitable impurities, in which Md30, which is expressed as Equation (a) described below, is −150 or less.Md30=413−462(C+N)−9.2Si−8.1Mn−9.5Ni−13.7Cr−29Cu  (a)

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