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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 9403242 B1

PDFFull Text
Date of Patent:
Aug. 02, 2016

Filed:

Jun. 29, 2012

Steel for welding

Applicants:

Kazuhiro Fukunaga, Tokyo, JP;

Yoshiyuki Watanabe, Tokyo, JP;

Shinsuke Usui, Tokyo, JP;

Rikio Chijiiwa, Futtsu, JP;

Inventors:

Kazuhiro Fukunaga, Tokyo, JP;

Yoshiyuki Watanabe, Tokyo, JP;

Shinsuke Usui, Tokyo, JP;

Rikio Chijiiwa, Futtsu, JP;

Assignee:

NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;

Attorney:

Kenyon & Kenyon LLP

Primary Examiner:

Roy King

Assistant Examiner:

Jophy S Koshy

Int. Cl.
CPC ...
C22C 38/04 (2006.01); B23K 35/30 (2006.01); C22C 38/58 (2006.01); C22C 38/54 (2006.01); C22C 38/50 (2006.01); C22C 38/48 (2006.01); C22C 38/46 (2006.01); C22C 38/44 (2006.01); C22C 38/42 (2006.01); C22C 38/14 (2006.01); C22C 38/12 (2006.01); C22C 38/08 (2006.01); C22C 38/06 (2006.01); C22C 38/02 (2006.01); C22C 38/00 (2006.01); C22C 38/60 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 1/02 (2006.01); B23K 9/18 (2006.01); B23K 9/23 (2006.01);
U.S. Cl.
CPC ...
B23K 35/3073 (2013.01); B23K 9/18 (2013.01); B23K 9/23 (2013.01); C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C21D 9/46 (2013.01); C22C 1/02 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (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 38/54 (2013.01); C22C 38/58 (2013.01); C22C 38/60 (2013.01); B23K 2203/04 (2013.01); C21D 2211/004 (2013.01);
Abstract

A steel for welding includes steel components in which Pis less than or equal to 0.065%, CeqH is less than or equal to 0.225%, FB is greater than or equal to 0.0003%, and Bp is 0.09% to 0.30%. In the steel for welding, in a thickness center portion of a cross-section in a thickness direction, the number of oxide particles having an equivalent circle diameter of 2 μm or greater is less than or equal to 20 particles/mmand the number of Ti oxides having an equivalent circle diameter of 0.05 μm to 0.5 μm is 1.0×10particles/mmto 1.0×10particles/mm.

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