Hot working high-chromium alloy
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United States of America Patent
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Aug 22, 2000
Issued Date -
N/A
app pub date -
Jun 26, 1998
filing date -
Oct 14, 1997
priority date (Note) -
Expired
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Abstract
Hot working a nickel-chromium alloy that contains by weight percent, 42 to 65 chromium, 0.002 to 0.1 calcium, 0.002 to 0.1 magnesium, 0 to 2 aluminum, about 0 to 5 cobalt, 0 to 3 copper, 0 to 5 iron, 0 to 5 manganese, 0 to 3 molybdenum, 0 to 3 niobium, 0 to 2 silicon, 0 to 3 tantalum, 0 to 5 titanium, 0 to 5 tungsten, 0 to 5 vanadium, 0 to 1 zinc, 0 to 0.2 carbon 0 to 0.1 silver, 0 to 0.1 cerium, 0 to 0.1 phosphorus, 0 to 0.1 sulfur, less than 0.005 total boron, rare earths and zirconium and balance nickel and incidental impurities, at a temperature of at least 800.degree. C. improves formability for .alpha.-phase chromium alloys.
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