Resulphurized austenitic stainless steel with improved machinability
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United States of America Patent
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Feb 18, 1992
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N/A
app pub date -
Jun 13, 1990
filing date -
Jun 16, 1989
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Expired
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Abstract
Resulphurized austenitic stainless steel with improved machinability, characterized in that its weight composition is the following: carbon lower than or equal to 0.15% silicon lower than or equal to 2% manganese lower than or equal to 2% molybdenum lower than or equal to 3% nickel between 7 and 12% chromium between 15 and 25% sulphur between 0.10 and 0.40% calcium higher than or equal to 30.times.10.sup.-4 % oxygen higher than or equal to 70.times.10.sup.-4 % the ratio of the calcium content and of the oxygen content Ca/O being between 0.2 and 0.6.
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