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:
Jul. 17, 2018
Filed:
Nov. 30, 2010
Masafumi Azuma, Tokyo, JP;
Noriyuki Suzuki, Tokyo, JP;
Naoki Maruyama, Tokyo, JP;
Akinobu Murasato, Tokyo, JP;
Yasuharu Sakuma, Tokyo, JP;
Hiroyuki Kawata, Tokyo, JP;
Chisato Wakabayashi, Tokyo, JP;
Masafumi Azuma, Tokyo, JP;
Noriyuki Suzuki, Tokyo, JP;
Naoki Maruyama, Tokyo, JP;
Akinobu Murasato, Tokyo, JP;
Yasuharu Sakuma, Tokyo, JP;
Hiroyuki Kawata, Tokyo, JP;
Chisato Wakabayashi, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
High strength steel plate with an ultimate tensile strength of 900 MPa or more which is excellent in hydrogen embrittlement resistance characterized in that, in the structure of the steel plate, (a) by volume fraction, ferrite is present in 10 to 50%, bainitic ferrite and/or bainite in 10 to 60%, and tempered martensite in 10 to 50%, and (b) iron-based carbides which contain Si or Si and Al in 0.1% or more are present in 4×10(particles/mm) or more.