Heat treatment process
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United States of America Patent
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Jul 21, 1992
Grant Date -
N/A
app pub date -
Sep 13, 1990
filing date -
Oct 28, 1989
priority date (Note) -
Expired
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Abstract
By solution-annealing and water-quenching of a hot-rolled ferritic chromium steel comprising 0.03 to 0.07% carbon, not more than 1% silicon, not more than 1% manganese, 13 to 18% chromium, not more than 2% nickel, balance iron and impurities arising from melting, a ferritic martensitic microstructure can be obtained to achieve high strength, hardness and toughness.
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