Steel sheet for cans and manufacturing method thereof

US10301702B2 · kind B2 · utility

Assignees

• JFE Steel Corporation · JP
• thyssenkrupp Rasselstein GmbH · DE

Inventors

• Takumi Tanaka · Uji, JP
• Yusuke Nakagawa · Tokyo, JP
• Masaki Tada · Fukuyama, JP
• Katsumi Kojima · Hasuda, JP
• Hiroki Nakamaru · Tokyo, JP
• Kathleen STEIN-FECHNER · Andernach, DE
• Burkhard Kaup · Andernach, DE

Key dates

• Filing date: May 11, 2015
• Grant date: May 28, 2019
• Expiry date: Jan 27, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D8/0436
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A can steel plate includes: equal or less than 0.0030% by mass of C; equal or less than 0.02% by mass of Si; 0.05-0.60% by mass of Mn; equal or less than 0.020% by mass of P; equal or less than 0.020% by mass of S; 0.010% to 0.100% by mass of Al; 0.0010-0.0050% by mass of N; 0.001-0.050% by mass of Nb; and balance Fe and impurities. Intensity of (111) [1-21] orientation (where −2 represents 2 with bar in Miller indices) and intensity of (111)[1-10] orientation (where −1 represents 1 with bar in Miller indices) satisfy the following equation (1), and in a rolling direction and 90° direction from the rolling direction in a horizontal plane, tensile strength TS (MPa) and fracture elongation El (%) satisfy relations of the following equations (2) and (3). (Intensity of (111) [1-21] orientation)/(Intensity of (111) [1-10] orientation)>0.9 . . . (1), TS>550 . . . (2), El>−0.02×TS+17.5 . . . (3).