US Patent Issued to ArcelorMittal on Sept. 16 for "High toughness hot rolled and annealed steel sheet and method of manufacturing the same" (French Inventors)

ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,416,056, issued on Sept. 16, was assigned to ArcelorMittal (Luxembourg).

"High toughness hot rolled and annealed steel sheet and method of manufacturing the same" was invented by Astrid Perlade (Le Ban-Saint-Martin, France), Kangying Zhu (Metz, France), Coralie Jung (Metz, France) and Frederic Kegel (Yutz, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hot rolled and annealed steel sheet having a composition including, by weight percent: C: 0.1-0.25%, Mn: 3.00-5.00%, Si: 0.80-1.60%, B: 0.0003-0.004%, Sless than equal to0.010%, Pless than equal to0.020%, Nless than equal to0.008% the remainder of the composition being iron and unavoidable impur...