Special Metals INCOLOY® alloy 864

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Special Metals INCOLOY® alloy 864
Categories:	Metal; Nonferrous Metal; Nickel Alloy
Material Notes:	INCOLOY® alloy 8684 (UNS S35135) was specifically developed for automotive exhaust system flexible couplings, EGR tubes, manifolds and tailpipes. It exhibits excellent fatigue resistance, thermal stability and resistance to hot salt corrosion, pitting and chloride stress-corrosion cracking. INCOLOY alloy 864 is covered by US Patent 5,827,377. Information Provided by Special Metals Corporation
Key Words:	UNS S35135
Vendors:	Visit metalmen for your metals needs. Products include special chemistry, tight tolerances, custom tempers, odd dimensions/forms, and small quantities. Phone 1-800-767-9494. Click here to view all available suppliers for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
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Physical Properties	Original Value	Comments

Density	8.02 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Rockwell B	82 @Temperature 20.0 °C	Autogenously Welded plate, 1.6mm thick
Tensile Strength at Break	161.3 MPa @Temperature 871 °C	Autogenously Welded plate, 1.6mm thick
	282 MPa @Temperature 759 °C	Autogenously Welded plate, 1.6mm thick
	402.7 MPa @Temperature 538 °C	Autogenously Welded plate, 1.6mm thick
	406.1 MPa @Temperature 648 °C	Autogenously Welded plate, 1.6mm thick
	444.7 MPa @Temperature 427 °C	Autogenously Welded plate, 1.6mm thick
	554.4 MPa @Temperature 20.0 °C	Autogenously Welded plate, 1.6mm thick
Tensile Strength, Ultimate	648 MPa	Annealed Sheet, 0.15-1.6mm thick
Tensile Strength, Yield	109.6 MPa @Temperature 871 °C	Autogenously Welded plate, 1.6mm thick
	182 MPa @Temperature 759 °C	Autogenously Welded plate, 1.6mm thick
	199.3 MPa @Temperature 648 °C	Autogenously Welded plate, 1.6mm thick
	213.1 MPa @Temperature 538 °C	Autogenously Welded plate, 1.6mm thick
	218.6 MPa @Temperature 427 °C	Autogenously Welded plate, 1.6mm thick
	312.3 MPa @Temperature 20.0 °C	Autogenously Welded plate, 1.6mm thick
	276 MPa @Strain 0.2 %	Annealed Sheet, 0.15-1.6mm thick
Elongation at Break	16.6 % @Temperature 538 °C	Autogenously Welded plate, 1.6mm thick
	18.4 % @Temperature 648 °C	Autogenously Welded plate, 1.6mm thick
	18.7 % @Temperature 20.0 °C	Autogenously Welded plate, 1.6mm thick
	20.5 % @Temperature 427 °C	Autogenously Welded plate, 1.6mm thick
	23.5 % @Temperature 759 °C	Autogenously Welded plate, 1.6mm thick
	55 % @Temperature 871 °C	Autogenously Welded plate, 1.6mm thick
	44 % @Thickness 0.150 - 1.60 mm	Annealed Sheet
Modulus of Elasticity	134 GPa @Temperature 900 °C
	145 GPa @Temperature 700 °C
	158 GPa @Temperature 500 °C
	175 GPa @Temperature 300 °C
	190 GPa @Temperature 100 °C
	195 GPa @Temperature 20.0 °C

Electrical Properties	Original Value	Comments
Electrical Resistivity	628 ohm-cir-mil/ft @Temperature 21.0 °C
Magnetic Permeability	1.004	at 200 Oersted (15.9 kA/m)

Thermal Properties	Original Value	Comments
CTE, linear	14.7 µm/m-°C @Temperature 100 °C
	15.1 µm/m-°C @Temperature 200 °C
	15.5 µm/m-°C @Temperature 300 °C
	15.9 µm/m-°C @Temperature 400 °C
	16.1 µm/m-°C @Temperature 500 °C
	16.4 µm/m-°C @Temperature 600 °C
	16.8 µm/m-°C @Temperature 700 °C
Thermal Conductivity	11.0 W/m-K @Temperature 23.0 °C
	13.0 W/m-K @Temperature 100 °C
	16.0 W/m-K @Temperature 300 °C
	19.0 W/m-K @Temperature 500 °C
	23.0 W/m-K @Temperature 700 °C
	25.0 W/m-K @Temperature 900 °C
	29.0 W/m-K @Temperature 1100 °C
Melting Point	1353 - 1393 °C
Solidus	1353 °C
Liquidus	1393 °C

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.080 %
Chromium, Cr	20 - 25 %
Iron, Fe	29.105 - 45 %	Balance
Manganese, Mn	<= 1.0 %
Molybdenum, Mo	4.0 - 4.8 %
Nickel, Ni	30 - 38 %
Silicon, Si	0.60 - 1.0 %
Sulfur, S	<= 0.015 %
Titanium, Ti	0.40 - 1.0 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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