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:
Aug. 31, 2021
Filed:
Jun. 24, 2014
Applicant:
Tenaris Connections Limited, Kingstown, VC;
Inventors:
Yusuke Minami, Kawasaki, JP;
Tatsuo Ono, Yokohamashi, JP;
Giuseppe Cumino, Dalmine, IT;
Paola Mariani, Capriate San Gervasio, IT;
Assignee:
Tenaris Connections B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 38/48 (2006.01); C22C 38/46 (2006.01); C22C 38/00 (2006.01); C22C 38/06 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C22C 38/54 (2006.01); C22C 38/44 (2006.01); F22B 37/04 (2006.01); C22C 38/26 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/32 (2006.01); F01K 5/02 (2006.01);
U.S. Cl.
CPC ...
F22B 37/04 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/32 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/54 (2013.01); F01K 5/02 (2013.01);
Abstract
The present invention provides a high-chromium heat-resistant steel. The steel contains in mass %, C: 0.08% to 0.13%; Si: 0.15% to 0.45%; Mn: 0.1% to 1.0%; Ni: 0.01% to 0.5%; Cr: 10.0% to 11.5%; Mo: 0.3% to 0.6%; V: 0.10% to 0.25%; Nb: 0.01% to 0.06%; N: 0.015% to 0.07%; B: ≤0.005%, and Al: ≤0.04%. The balance consists of Fe and inevitable impurity elements. The steel shows a martensitic microstructure.