Special Metals INCOTHERM® TD Nickel Alloy

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Special Metals INCOTHERM® TD Nickel Alloy
Categories:	Metal; Nonferrous Metal; Nickel Alloy; Superalloy; Nickel Base
Material Notes:	INCOTHERM® alloy TD is recommended for thermocouple sheathing where high-temperature corrosion resistance and strength are required without the use of elements that may cause thermocouple degradation over time. Elements such as manganese and aluminum, which can diffuse through the thermocouple insulator and contaminate the thermo-element wires leading to emf drift over time, are controlled at very low levels thus giving excellent long term performance. The composition is similar to the thermo-element wires, which further reduces the potential for the diffusion of elements between the alloys. The alloy has outstanding static and cyclic oxidation resistance at temperatures up to at least 1250°C (2282°F). INCOTHERM alloy TD is highly resistant to oxide spalling and can be considered for applications where contamination needs to be controlled at low levels, such as in glass making and electronic component processing. Information Provided by Special Metals Corporation
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Physical Properties	Original Value	Comments

Density	8.17 g/cc

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	90.0 MPa @Temperature 1000 °C
	280 MPa @Temperature 800 °C
	440 MPa @Temperature 600 °C
	560 MPa @Temperature 400 °C
	680 MPa @Temperature 200 °C
	800 MPa @Temperature 20.0 °C
Tensile Strength, Yield	30.0 MPa @Temperature 1000 °C
	170 MPa @Temperature 800 °C
	220 MPa @Temperature 600 °C
	290 MPa @Temperature 400 °C
	350 MPa @Temperature 200 °C
	400 MPa @Temperature 20.0 °C
Elongation at Break	50 % @Temperature 20.0 °C
	58 % @Temperature 200 °C
	65 % @Temperature 400 °C
	73 % @Temperature 600 °C
	81 % @Temperature 800 °C
	81 % @Temperature 1000 °C
Rupture Strength	4.00 MPa @Temperature 1200 °C, Time 6.12e+6 sec
	5.00 MPa @Temperature 1177 °C, Time 9.00e+6 sec
	6.00 MPa @Temperature 1177 °C, Time 3.06e+6 sec
	7.00 MPa @Temperature 1100 °C, Time 7.92e+6 sec
	9.50 MPa @Temperature 1100 °C, Time 2.16e+6 sec
	10.0 MPa @Temperature 1100 °C, Time 504000 sec

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000116 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	14.6 µm/m-°C @Temperature 500 °C
	15.0 µm/m-°C @Temperature 600 °C
	15.59 µm/m-°C @Temperature 700 °C
	16.1 µm/m-°C @Temperature 800 °C
	16.81 µm/m-°C @Temperature 900 °C
	17.30 µm/m-°C @Temperature 1000 °C
Melting Point	1380 - 1400 °C
Solidus	1380 °C
Liquidus	1400 °C
Maximum Service Temperature, Air	>= 1250 °C	oxidation resistance

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.01 %
Chromium, Cr	22 %
Molybdenum, Mo	3 %
Nickel, Ni	73.6 %	Balance
Silicon, Si	1.4 %

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NINDA24 / 191482

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