Austenitic High Mn Stainless Steel for High Pressure Hydrogen Gas
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United States of America Patent
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Issued Date -
Jun 25, 2009
app pub date -
Oct 27, 2006
filing date -
Nov 1, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention proposes an austenitic high Mn stainless steel maintaining a hydrogen embrittlement resistance above that of SUS316L and adapted to a low temperature hydrogen environment by being designed in compositions to comprise, by mass %, C: 0.01 to 0.10%, N: 0.01 to 0.40%, Si: 0.1 to 1%, Cr: 10 to 20%, Mn: 6 to 20%, Cu: 2 to 5%, Ni: 1 to 6%, and a balance of Fe and unavoidable impurities and have an Md30 value of an indicator of an austenite stabilization degree satisfying −120
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