Austenitischer Edelstahl mit Verbesserter Schlagzähigkeit bei Extrem Niedriger Temperatur und Verbesserter Festigkeit sowie Verfahren zur Herstellung davon

Details

Veröffentlichungs-Nr.

EP4768622

Anmeldetag

20. Dezember 2023

Veröffentlichung

5. Juni 2025

Rechtsraum

EP

Abstract

An austenitic stainless steel according to an example of the present disclosure, with improved cryogenic impact toughness and strength, comprising, by weight percent, C: more than 0% and 0.03% or less, N: 0.10% to 0.30%, Si: more than 0% and 1.0% or less, Mn: more than 0% and 5.0% or less, Cr: 17.0% to 22.0%, Ni: 5% to 12.0%, Cu: morethan 0% and 1.0% or less, Mo: more than 0% and 2.5% or less, with the remainder being Fe and unavoidable impurities. The steel satisfies the following Formula (1) and has an impact toughness value at a temperature of -253 °C of 70 J to 200J. −0.6≤1+Ni−Mn−2*Mn−2−0.5*Cr−Mo+Si+0.1*Cu≤1.0 (wherein Si, Mn, Cr, Ni, Cu, and Mo represent the content of each element in weight percent)

Anmelder

Firma

POSCO Co., Ltd

Land

🇰🇷 Südkorea