Hot-rolled or cold-rolled steel plate

US11131011B2 · kind B2 · utility

Assignee

• ArcelorMittal · LI

Inventors

• Colin Scott · Metz, FR
• Philippe Cugy · Thionville, FR

Key dates

• Filing date: Mar 18, 2019
• Grant date: Sep 28, 2021
• Expiry date: Mar 18, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12799
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A hot-rolled or cold-rolled steel plate having a composition including, in weight percent: 0.6%≤C≤0.9%; 17%≤Mn≤22%; 0.2%≤Al≤0.9%; 0.2%≤Si≤1.1%; with 0.85%≤Al+Si≤1.6%; 1.2%≤Cu≤1.7%; S≤0.030%; P≤0.080%; N≤0.1%; 0<Nb≤0.25%; 0<V≤0.5%; 0<Ti≤0.5%; 0<Ni≤2%; trace amounts ≤Cr≤2% and B≤0.010% is provided. A remainder of the composition includes iron and impurities resulting from production of the steel plate. A method for manufacturing a steel plate and use of the steel plate in the automotive industry is also provided.