US Patent Issued to Resonac on May 12 for "Aluminum alloy forging and manufacturing method thereof" (Japanese Inventors)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,422, issued on May 12, was assigned to Resonac Corp. (Tokyo).

"Aluminum alloy forging and manufacturing method thereof" was invented by Takuya Arayama (Tokyo), Hiroaki Murakami (Tokyo) and Yoshifumi Kimura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An aluminum alloy forging formed of an aluminum alloy containing Cu: 0.15% to 1.0%, Mg: 0.6% to 1.35%, Si: 0.95% to 1.45%, Mn: 0.4% to 0.6%, Fe: 0.2% to 0.7%, Cr: 0.05% to 0.35%, Ti: 0.012% to 0.035%, B: 0.0001% to 0.03%, Zn: 0.25% or less, Zr: 0.05% or less (all % given by mass), and a remainder consisting of Al and inevitable impurities, in which a crystal grain diameter where a maximum princi...