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:
Sep. 14, 2010
Filed:
Nov. 04, 2005
Philippe Cugy, Thionville, FR;
Nicolas Guelton, Metz, FR;
Colin Scott, Montigny les Metz, FR;
Francois Stouvenot, Labry, FR;
Marie-christine Theyssier, Metz, FR;
Philippe Cugy, Thionville, FR;
Nicolas Guelton, Metz, FR;
Colin Scott, Montigny les Metz, FR;
Francois Stouvenot, Labry, FR;
Marie-Christine Theyssier, Metz, FR;
Arcelor France, Saint Denis, FR;
Abstract
A hot-rolled austenitic iron/carbon/manganese steel sheet, the strength of which is greater than 1200 MPa, the product P (strength (in MPa)×elongation at break (in %)) of which is greater than 65 000 MPa % and the nominal chemical composition of which comprises, the contents being expressed by weight: 0.85%≦C≦1.05%; 16%≦Mn≦19%; Si≦2%; Al≦0.050%; S≦0.030%; P≦0.050%; N≦0.1%, and, optionally, one or more elements chosen from: Cr≦1%; Mo≦0.40%; Ni≦1%; Cu≦5%; Ti≦0.50%; Nb≦0.50%; V≦0.50%, the rest of the composition consisting of iron and inevitable impurities resulting from the smelting, the recrystallized surface fraction of said steel being equal to 100%, the surface fraction of precipitated carbides of said steel being equal to 0% and the mean grain size of said steel being less than or equal to 10 microns.