Austenitic steel with high resistance to hydrogen-induced embrittlement

摘要

Austenitic steel for use in an at least partially direct contact area with a hydrogen-containing fluid, in particular for a hydrogen tank, which has embrittlement-resistant properties with respect to the hydrogen, consisting of an alloy in mass% of - chromium (Cr) 10.0-23, 0 - Manganese (Mn) 3.0-9.0 - Nickel (Ni) 3.0-8.0 - Carbon (C) 0.05-0.15 - Nitrogen (N) 0.001-0.03 - Aluminum ( Al) 0.005-0.15 and silicon (Si) and a balance iron (Fe) and impurities caused by melting, wherein the alloy is substantially free of molybdenum (Mo), characterized in that the proportion of silicon (Si) 1.1 -3.0 mass%.