US Patent Issued to SHANDONG IRON AND STEEL on Dec. 23 for "Hot-rolled, low-temperature-resistant, H-shaped steel with grade of yield strength of 420 MPa and preparation method therefor" (Chinese Inventors)

ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,738, issued on Dec. 23, was assigned to SHANDONG IRON AND STEEL COMPANY LTD. (Laiwu, China).

"Hot-rolled, low-temperature-resistant, H-shaped steel with grade of yield strength of 420 MPa and preparation method therefor" was invented by Zhongxue Wang (Jinan, China), Peilin Zhao (Jinan, China) and Hongyin Liu (Jinan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hot-rolled, low-temperature-resistant, H-shaped steel with a grade of 420 MPa includes the following chemical components in percentages by weight: C: 0.08-0.10%, Siless than equal to0.2%, Mn: 1.25-1.45%, V: 0.03-0.045%, Ti: 0.015-0.025%, Cr: 0.15-0.30%, Al: 0.02-0.04%, N: 0.007-0.01%...