MARTENSITE STAINLESS STEEL FOR HIGH-PRESSURE HYDROGEN COMPONENT, HIGH-PRESSURE HYDROGEN COMPONENT USING SAME, AND METHOD FOR PRODUCING SAME

Title:

MARTENSITE STAINLESS STEEL FOR HIGH-PRESSURE HYDROGEN COMPONENT, HIGH-PRESSURE HYDROGEN COMPONENT USING SAME, AND METHOD FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2023/189563

Kind Code:

A1

Abstract:

This martensite stainless steel for high-pressure hydrogen component has a chemical configuration comprising, in terms of mass%, 0.01-0.05% of C; 0.70% or less of Is; 1.10% or less of Mn; 0.04% or less of P; 0.030% or less of S; 4.00-5.70% of Ni; and 17.00-20.50% of Cr, optionally comprising 0.0005-0.0030% of Ca, and also optionally comprising 0.0005-0.0050% of B, the balance being Fe and unavoidable impurities. The chemical configuration satisfies formula 1.　Formula 1: 3.0 > Ni – 0 > Ni – 0.8Cr + 11.36 > 0 (where the symbols of elements in formula 1 represent the value of the content ratio (%) of the respective elements.)

Inventors:

KUBOTA KAZUMASA (JP)
WATANABE YOSHINORI (JP)
HANAI WATARU (JP)
KAWAKAMI RYO (JP)

Application Number:

PCT/JP2023/009928

Publication Date:

October 05, 2023

Filing Date:

March 14, 2023

Export Citation:

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Assignee:

AICHI STEEL CORP (JP)

International Classes:

C21D9/00; C22C38/00; C22C38/40

Foreign References:

JPS5794559A	1982-06-12
JPS60169550A	1985-09-03
JPH0375337A	1991-03-29
JPH08134600A	1996-05-28