Special Metals UDIMET® alloy R41 Ni-Cr Alloy

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Special Metals UDIMET® alloy R41 Ni-Cr Alloy
Categories:	Metal; Nonferrous Metal; Nickel Alloy; Superalloy
Material Notes:	UDIMET® alloy R41 (UNS N07041) is a precipitation-hardenable nickel-chromium alloy containing significant amounts of cobalt and molybdenum, along with lesser amounts of aluminum and titanium. Alloy R41 exhibits extremely high room and elevated temperature mechanical properties. Excellent corrosion resistance and fabricability have led to wide usage in critical aircraft engine components such as nozzle partitions, turbine blades and wheels, combustion chamber liners and structural hardware. Information Provided by Special Metals Corporation
Key Words:	UNS N07041; AMS 5545, 5712, 5713
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Physical Properties	Original Value	Comments

Density	8.25 g/cc

Mechanical Properties	Original Value	Comments
Rupture Strength	76.0 MPa @Temperature 927 °C, Time 3.60e+6 sec
	117 MPa @Temperature 871 °C, Time 3.60e+6 sec
	200 MPa @Temperature 816 °C, Time 3.60e+6 sec
	345 MPa @Temperature 760 °C, Time 3.60e+6 sec
	550 MPa @Temperature 704 °C, Time 3.60e+6 sec
	705 MPa @Temperature 649 °C, Time 3.60e+6 sec

Thermal Properties	Original Value	Comments
CTE, linear	11.9 µm/m-°C @Temperature 93.0 °C
Specific Heat Capacity	0.435 J/g-°C
Thermal Conductivity	9.00 W/m-K
Melting Point	1232 - 1391 °C
Solidus	1232 °C
Liquidus	1391 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	1.4 - 1.8 %
Boron, B	0.0030 - 0.010 %
Carbon, C	<= 0.12 %
Chromium, Cr	18 - 20 %
Cobalt, Co	10 - 12 %
Iron, Fe	<= 5.0 %
Molybdenum, Mo	9.0 - 10.5 %
Nickel, Ni	47.27 - 58.597 %	Balance
Titanium, Ti	3.0 - 3.3 %

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NINDA21 / 98912

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