Oberflächenbehandeltes Stahlblech und Herstellungsverfahren dafür

Details

Veröffentlichungs-Nr.

EP4831362

Anmeldetag

20. Februar 2025

Veröffentlichung

2. Oktober 2025

Rechtsraum

EP

IPC

C25D5/18, C25D3/06, C25D5/26

Abstract

Provided is a surface-treated steel sheet that can be produced without the use of hexavalent chromium and that combines excellent film corrosion resistance, painting corrosion resistance, and weldability. The surface-treated steel sheet includes a steel sheet and a chromium-containing layer on at least one side of the steel sheet. The arithmetic mean roughness of a roughness curve determined by a defined method is 1.30 nm or more and 15.0 nm or less. The chromium-containing layer has an atomic ratio of C to Cr of 0.2 % or more and 50.0 % or less.

Anmelder

Firma

JFE Steel Corporation

Land

🇯🇵 Japan

Fachgebiete