Nickel-based alloy having high stress rupture life
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United States of America Patent
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Aug 12, 2003
Grant Date -
Mar 28, 2002
app pub date -
Apr 30, 2001
filing date -
Jun 24, 1994
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Abstract
A nickel-based fine grained alloy consisting essentially of 40-55 wt % Ni, 14.5-21 wt % Cr, 2.5-5.5 wt % Nb+Ta, up to 3.3 wt % Mo, 0.65-2.00 wt % Ti, 0.10-0.8 wt % Al, up to 0.35 wt % Mn, up to 0.07 wt % C, up to 0.015 wt % S, up to 0.35 wt % Si, at least 0.016 wt % P, from 0.003 % to 0.030 wt % B, and the balance Fe and incidental impurities, has a high stress rupture life.
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