US Patent Issued to BAOSHAN IRON & STEEL on July 15 for "980MPA grade cold-roll steel sheets with high hole expansion rate and higher percentage elongation and manufacturing method therefor" (Chinese Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,273, issued on July 15, was assigned to BAOSHAN IRON & STEEL Co. LTD. (Shanghai).

"980MPA grade cold-roll steel sheets with high hole expansion rate and higher percentage elongation and manufacturing method therefor" was invented by Peng Xue (Shanghai), Xiaodong Zhu (Shanghai) and Wei Li (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a 980 MPa grade cold-roll steel sheets with high hole expansion rate and higher percentage elongation, and manufacturing method thereof. The mass percents of chemical components in the steel sheet are: C: 0.08%-0.12%, Si: 0.1%-1.0%, Mn: 1.9%-2.6%, Al: 0.01%-0.05%, Cr: 0.1-0.55%, Mo: 0.1-0.5%, Ti: ...