High-strength corrosion-resistant composite chequered iron and manufacturing method therefor

US11130161B2 · kind B2 · utility

Assignee

• BAOSHAN IRON & STEEL CO., LTD. · CN

Inventors

• Bo Yan · Suzhou, CN
• Sihai Jiao · Shanghai, CN
• Xiaoming Xia · Zhejiang, CN

Key dates

• Filing date: Nov 16, 2017
• Grant date: Sep 28, 2021
• Expiry date: Nov 16, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/26
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosed are a high-strength corrosion-resistant cladding chequered steel and a manufacturing method therefor. The high-strength corrosion-resistant cladding chequered steel includes a substrate and a chequered cladding layer cladded on the substrate by single-sided or double-sided rolling. The mass percentages of the chemical elements of the substrate are: C: 0.01% to 0.20%, Si: 0.10% to 0.5%, Mn: 0.5% to 2.0%, Al: 0.02% to 0.04%, Ti: 0.005% to 0.018%, Nb: 0.005% to 0.020%, 0<B≤0.0003%, N≤0.006%, and the balance being steel and other inevitable impurities. The high-strength corrosion-resistant cladding steel plate has a high strength, a high corrosion resistance, a yield strength ≥470 MPa, a tensile strength ≥610 MPa, a shear strength ≥410 MPa, and an elongation ≥40%.