Special Metals UDIMET® alloy 720 Nickel Base Alloy

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Special Metals UDIMET® alloy 720 Nickel Base Alloy
Categories:	Metal; Nonferrous Metal; Nickel Alloy; Superalloy
Material Notes:	UDIMET® alloy 720 is a nickel base alloy, solid solution strengthened with tungsten and molybdenum and precipitation-hardened with titanium and aluminum. The alloy combines high strength with metallurgical stability as demonstrated by excellent impact strength retention after long exposures at elevated temperatures. Good oxidation and corrosion resistance combined with high strength make the alloy useful in gas turbine blade and disc applications. Information Provided by Special Metals Corporation
Key Words:	EMS 55477; EMS 73105; MSRR 7252; C50TF105; MTS 5013
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Physical Properties	Metric	English	Comments

Density	8.08 g/cc	0.292 lb/in³

Mechanical Properties	Metric	English	Comments
Rupture Strength	68.0 MPa @Temperature 982 °C, Time 3.60e+6 sec	9860 psi @Temperature 1800 °F, Time 1000 hour
	219 MPa @Temperature 871 °C, Time 3.60e+6 sec	31800 psi @Temperature 1600 °F, Time 1000 hour
	480 MPa @Temperature 760 °C, Time 3.60e+6 sec	69600 psi @Temperature 1400 °F, Time 1000 hour
	500 MPa @Temperature 704 °C, Time 3.60e+6 sec	72500 psi @Temperature 1300 °F, Time 1000 hour
	700 MPa @Temperature 649 °C, Time 3.60e+6 sec	102000 psi @Temperature 1200 °F, Time 1000 hour

Thermal Properties	Metric	English	Comments
CTE, linear	12.24 µm/m-°C @Temperature 93.0 °C	6.800 µin/in-°F @Temperature 199 °F
Melting Point	1194 - 1338 °C	2181 - 2440 °F
Solidus	1194 °C	2181 °F
Liquidus	1338 °C	2440 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	2.25 - 2.75 %	2.25 - 2.75 %
Boron, B	0.010 - 0.020 %	0.010 - 0.020 %
Carbon, C	0.010 - 0.020 %	0.010 - 0.020 %
Chromium, Cr	15.5 - 16.5 %	15.5 - 16.5 %
Cobalt, Co	14 - 15.5 %	14 - 15.5 %
Molybdenum, Mo	2.75 - 3.25 %	2.75 - 3.25 %
Nickel, Ni	55.16 - 59.705 %	55.16 - 59.705 %	Balance
Titanium, Ti	4.75 - 5.25 %	4.75 - 5.25 %
Tungsten, W	1.0 - 1.5 %	1.0 - 1.5 %
Zirconium, Zr	0.025 - 0.050 %	0.025 - 0.050 %

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NINDA19 / 98910

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