Niedriglegierter Hitzebeständiger Stahl und Stahlrohr

Details

Veröffentlichungs-Nr.

EP3778972

Aktenzeichen

EP20190880

Anmeldetag

13. August 2020

Veröffentlichung

6. März 2024

Erteilung

6. März 2024

Rechtsraum

EP

IPC

C22C38/00C22C38/02C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50C22C38/52C22C38/54// C21D1/18C21D1/28C21D6/00C21D8/10C21D9/14C21D9/08

Abstract

The present invention provides: a low alloy heat-resistant steel including predetermined chemical components, with the balance consisting of Fe and impurities, in which the total amount of Ni, Co and Cu satisfies the following Formula (1), and the amount of W, analyzed as an electrolytic extraction residue, satisfies the following Formula (2): 0.03≤%Ni+%Co+%Cu≤0.80−10×%B+0.07≤%WER≤10×%B+0.18In Formulae (1) and (2), [%Ni], [%Co], [%Cu], and [%B] represent the amounts of Ni, Co, Cu, and B, in % by mass, contained in the steel, respectively; and [%W]_ER represents the amount of W, analyzed as the electrolytic extraction residue, in % by mass. The present invention also provides a steel pipe formed from the above described low alloy heat-resistant steel.

Anmelder

Firma

NIPPON STEEL CORPORATION

Land

🇯🇵 Japan

Fachgebiete