US Patent Issued to JFE STEEL on Oct. 6 for "TIG welded joint" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,752,379, issued on Oct. 6, was assigned to JFE STEEL Corp. (Tokyo).

"TIG welded joint" was invented by Kazufumi Watanabe (Tokyo), Atsushi Takada (Tokyo), Akiyoshi Ando (Tokyo), Takatoshi Okabe (Tokyo) and Keiji Ueda (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A TIG welded joint in a high-Mn content steel material that can be formed with reduced occurrence of hot cracking during the welding process and has high strength and excellent cryogenic impact toughness. In the TIG welded joint, the high-Mn content steel material has a chemical composition including, by mass %, C: 0.10 to 0.80%, Si: 0.05 to 1.00%, Mn: 18.0 to 30.0%, P: 0.030% or less, S: ...