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:
Feb. 15, 2011
Filed:
Jan. 15, 2007
Applicants:
Wataru Urushihara, Kobe, JP;
Toshiki Sato, Kobe, JP;
Nao Yoshihara, Kobe, JP;
Inventors:
Assignee:
Kobe Steel, Ltd., Kobe-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B 15/18 (2006.01); C22C 38/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A high-strength steel excellent in hydrogen embrittlement resistance is provided. The high-strength steel of the present invention excellent in hydrogen embrittlement resistance has a tensile strength of 1800 N/mmor above, contains 0.3 to 0.7% (percent by mass) C, 0.95 to 5.0% Cr, not higher than 0.6% and higher than 0% Mn, and 0.7 to 2.5% Si, and contains at least one of Mg, Ca, Sr, Ba, Li, Na and K so as to meet the following conditions: