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:
Jan. 02, 2018
Filed:
Jun. 19, 2013
Applicant:
Nippon Steel & Sumitomo Metal Corporation, Chiyoda-ku, Tokyo, JP;
Inventors:
Yumi Momozono, Tokyo, JP;
Mitsuharu Yonemura, Tokyo, JP;
Yasuhiro Masaki, Tokyo, JP;
Manabu Kanzaki, Tokyo, JP;
Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G21C 15/02 (2006.01); C21D 8/10 (2006.01); C22C 19/05 (2006.01); C22C 38/00 (2006.01); C22F 1/00 (2006.01); C22F 1/02 (2006.01); C22F 1/10 (2006.01); G21D 1/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/50 (2006.01); C21D 1/26 (2006.01); C21D 6/00 (2006.01); C21D 9/08 (2006.01); C22C 30/00 (2006.01); C22C 38/40 (2006.01);
U.S. Cl.
CPC ...
G21C 15/02 (2013.01); C21D 1/26 (2013.01); C21D 6/004 (2013.01); C21D 8/10 (2013.01); C21D 8/105 (2013.01); C21D 9/08 (2013.01); C22C 19/05 (2013.01); C22C 19/058 (2013.01); C22C 30/00 (2013.01); C22C 38/00 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/40 (2013.01); C22C 38/42 (2013.01); C22C 38/50 (2013.01); C22F 1/00 (2013.01); C22F 1/02 (2013.01); C22F 1/10 (2013.01); G21D 1/006 (2013.01); Y02E 30/40 (2013.01);
Abstract
An austenitic alloy tube subjected to a cold working and an annealing heat treatment contains C: 0.01% to 0.15%, Cr: 10.0% to 40.0%, Ni: 8.0% to 80.0%, in mass %, and has a metallographic structure satisfying the following Expressions (i) to (iii).1  (i)  (ii)1=0.28×(/(0.35))  (iii)