Iron- nickel alloy with low coefficient of thermal expansion for making shade masks
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United States of America Patent
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Issued Date -
Aug 3, 2006
app pub date -
Dec 18, 2003
filing date -
Dec 20, 2002
priority date (Note) -
Abandoned
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Abstract
The invention concerns an alloy whereof the chemical composition comprises, by weight: 35%=Ni=37%. 0.001% %=C=0.05, % Mn=0.10%, Si=0.15%, Co=0.5%, S<0.002%, P=0.006%, B=0.0005%, Al+Mo+Cu+Cr=0.15% 0.015%=2(V+Ti)+Nb+Zr+Ta+III=0.2%, 0.0025%=N+O=0.015% optionally calcium and/or magnesium with total content ranging beween 0.001 and 0.005%, the rest consisting of iron and unavoidable impurities resulting from preparation, and a method for making a strip of said alloy.
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