AUSTENITIC STAINLESS STEEL SUPERIOR IN STEAM OXIDATION RESISTANCE, CARBURIZATION RESISTANCE, AND sigma EMBRITTLEMENT RESISTANCE

AUSTENITIC STAINLESS STEEL SUPERIOR IN STEAM OXIDATION RESISTANCE, CARBURIZATION RESISTANCE, AND sigma EMBRITTLEMENT RESISTANCE

PROBLEM TO BE SOLVED: To provide an austenitic stainless steel which balances scale exfoliation resistance and carburization resistance with σ embrittlement resistance, at high levels. SOLUTION: The austenitic stainless steel includes 0.02-0.10% C, 1.5-2.5% Si, 2.0% or less Mn, 0.04% or less P, 0.02...

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Bibliographische Detailangaben
Hauptverfasser: FUJIMURA YOSHIYUKI, OKU MANABU, HORI YOSHIAKI, NAGOSHI TOSHIRO, KADOWAKI MASATAKA, AKIYAMA YUKINORI
Format: Patent
Sprache:eng
Schlagworte:
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide an austenitic stainless steel which balances scale exfoliation resistance and carburization resistance with σ embrittlement resistance, at high levels. SOLUTION: The austenitic stainless steel includes 0.02-0.10% C, 1.5-2.5% Si, 2.0% or less Mn, 0.04% or less P, 0.02% or less S, 7-12% Ni, 15-25% Cr, 0.001-0.1% in total of one or more of Y and REM (rare-earth metals), and 0.02-0.20% N, and can further include, one or more of 0.05-0.5% Nb, 0.05-0.5% Ti, 0.1-4.0% Mo, and 0.1-4.0% Cu, and/or one or two of 0.01-2.5% Al and 0.001-0.1% Ca.