US Patent Issued to POSCO on June 17 for "Steel material, for pressure vessel, showing excellent hydrogen-induced cracking resistance and method for preparing same" (South Korean Inventors)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,373, issued on June 17, was assigned to POSCO Co. LTD (Pohang-si, South Korea).

"Steel material, for pressure vessel, showing excellent hydrogen-induced cracking resistance and method for preparing same" was invented by Dae-Woo Kim (Pohang-si, South Korea) and Woo-Yeol Cha (Pohang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An embodiment of the present invention provides a steel material, for a pressure vessel, comprising, in weight %, 0.06-0.25% of carbon (C), 0.05-0.50% of silicon (Si), 1.0-2.0% of manganese (Mn), 0.005-0.40% of aluminum (Al), 0.010% or less of phosphorus (P), 0.0010% or less of sulfur (S), 0.001-0.03% of niobiu...