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:
Dec. 01, 2015
Filed:
Jul. 06, 2007
Colin Scott, Montigny les Mietz, FR;
Philippe Cugy, Thionville, FR;
Christian Allely, Metz, FR;
ArcelorMittal France, Saint Denis, FR;
Thyssenkrupp Steel AG, Duisburg, DE;
Abstract
An austenitic steel sheet excellent in resistance to delayed cracking, the composition of said steel comprising, in weight: 0,35%<C<1,05%, 15%<Mn<26%, Si<3%, Al<0,050%, S<0,030%, P<0,080%, N<0,1%, at least one metallic element X chosen among vanadium, titanium, niobium, molybdenum, chromium: 0,050%<V<0,50%, 0,040%≦Ti<0,50%, 0,070%<Nb<0,50%, 0,14%<Mo<2%, 0,070%<Cr<2% and optionally, one or several elements chosen among 0,0005%<B<0,010%, Ni<2%, Cu<5%, the remainder being iron and unavoidable impurities inherent to fabrication, including hydrogen, the quantity Xp of said at least one metallic element under the form of carbides, nitrides or carbonitrides being, in weight: 0,030%<VP<0,40%, 0,030%<Tip<0,50%, 0,040%<Nbp<0,40%, 0,14%<Mop<0,44%, 0,070%<Crp<0,6%, the hydrogen content Hmax designating the maximal hydrogen content that can be measured from a series of at least five specimens, and the quantity Xp, in weight, being such that (I) <3,3.