US Patent Issued to BAOSHAN IRON & STEEL on Feb. 4 for "High-yield-ratio cold-rolled dual-phase steel and manufacturing method therefor" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,215,397, issued on Feb. 4, was assigned to BAOSHAN IRON & STEEL Co. LTD. (Shanghai).

"High-yield-ratio cold-rolled dual-phase steel and manufacturing method therefor" was invented by Wei Li (Shanghai), Xiaodong Zhu (Shanghai) and Peng Xue (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a high-yield-ratio cold-rolled dual-phase steel, having the following chemical elements in percentage by mass: 0.05%-0.08% of C, 0.9%-1.2% of Mn, 0.1%-0.6% of Si, 0.030%-0.060% of Nb, 0.030%-0.060% of Ti, 0.015%-0.045% of Al, and the balance being Fe and other inevitable impurities. A manufacturing method for the high-yield-ratio cold-rolled dual-phas...