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:
May. 04, 1999
Filed:
Nov. 28, 1997
Tohru Hayashi, Kurashiki, JP;
Keniti Amano, Kurashiki, JP;
Mitsuhiro Okatsu, Kurashiki, JP;
Kenji Oi, Kurashiki, JP;
Fumimaru Kawabata, Kurashiki, JP;
Tomoya Koseki, Kurashiki, JP;
Noritsugu Itakura, Kurashiki, JP;
Hiroki Ota, Kurashiki, JP;
Kawasaki Steel Corporation, Kobe, JP;
Abstract
This invention provides bainite steel materials having a less scattering of properties in a thickness direction or between steel materials by using a chemical composition of C: not less than 0.001 wt % but less than 0.030 wt %, Si: not more than 0.60 wt %, Mn: 1.00-3.00 wt %, Nb: 0.005-0.20 wt %, B: 0.0003-0.0050 wt % and Al: not more than 0.100 wt % and rendering not less than 90% of the material into a bainite texture in steel materials such as thick steel plates, steel sheets, section steels, rod steels and the like.