Feuerverzinktes Plattiertes Stahlmaterial

Details

Veröffentlichungs-Nr.

EP4756065

Anmeldetag

1. August 2024

Veröffentlichung

6. Februar 2025

Rechtsraum

EP

Abstract

In this hot-dip plated steel material, the plated layer has a chemical composition including, in terms of mass%, more than 10.0% and 60.0% or less of Al, 4.0% or more and 15.0% or less of Mg, 3.5% or more and 8.0% or less of Si, and a remainder of Zn and impurities, and in a case where, in an elemental distribution profile obtained by a qualitative analysis using a GDS method in a direction from a surface of the plated layer toward the steel material, a thickness of a region from a surface of the plated layer to a depth position where an Fe intensity corresponding to 5% with respect to the maximum intensity of Fe is detected is denoted by Tg, the average value of Si from the surface of the plated layer to Tg/3 is denoted by Si (surf), the average value of Si in a range of Tg/3 to 2 Tg/3 starting from the surface of the plated layer is denoted by Si (centre), and the average value of Si in a range of 2 Tg/3 to Tg starting from the surface of the plated layer is denoted by Si (deep), Expression (1) is satisfied. Si surf < Si deep < Si centre <img class="EMIRef" id="914a8b3b-e6de-4413-a854-b6ce83484776-ia01" />

Anmelder

Firma

Nippon Steel Corporation

Land

🇯🇵 Japan