Special Metals INCONEL® Alloy X-750

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Special Metals INCONEL® Alloy X-750
Categories:	Metal; Nonferrous Metal; Nickel Alloy; Superalloy
Material Notes:	A nickel-chromium alloy similar to INCONEL alloy 600 but made precipitation hardenable by additions of aluminum and titanium. The alloy has good resistance to corrosion and oxidation along with high tensile and creep-rupture properties at temperatures to about 1300°F (700°C). Its excellent relaxation resistance is useful for high-temperature springs and bolts. Used in gas turbines, rocket engines, nuclear reactors, pressure vessels, tooling, and aircraft structures. Standard product forms are round, flats, extruded section, forging stock, plate, sheet, strip, pipe, tube, and wire. Data provided by the manufacturer, Special Metals.
Key Words:	MIL-N-7786, MIL-N-8550, MIL-S-23192, MIL-N-24114; NACE MR-01-75; AFNOR NC 15 FeT, SAE AMS 5542, 5582, 5583, 5598, 5667 - 5671, 5698, 5699, 5747, 7246, UNS N07750; BS HR505; ASTM B 637; ASME SB-637, Boiler Code Section III; Werkstoff Nr. 2.4669
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	8.28 g/cc

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	1120 MPa @Temperature 550 °C	Precipitation Hardened prior to test
	1250 MPa @Temperature 23.0 °C
Tensile Strength, Yield	850 MPa @Strain 0.2 %	Precipitation Hardened. Value at room temperature
	760 MPa @Strain 0.2 %, Temperature 550 °C	Precipitation Hardened prior to test
Elongation at Break	30 %	Precipitation Hardened
	22 % @Temperature 550 °C	Precipitation Hardened prior to test.
Rupture Strength	3200 psi @Temperature 982 °C, Time 360000 sec
	16000 psi @Temperature 816 °C, Time 3.60e+6 sec
	26000 psi @Temperature 816 °C, Time 360000 sec
	68000 psi @Temperature 649 °C, Time 3.60e+6 sec
	80000 psi @Temperature 649 °C, Time 360000 sec

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000122 ohm-cm
Magnetic Permeability	1.0035	at 200 Oersted (15.9 kA/m)
Curie Temperature	-125 °C

Thermal Properties	Original Value	Comments
CTE, linear	12.6 µm/m-°C @Temperature 20.0 - 100 °C
Specific Heat Capacity	0.431 J/g-°C
Thermal Conductivity	12.0 W/m-K
Melting Point	1390 - 1430 °C
Solidus	1390 °C
Liquidus	1430 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	0.40 - 1.0 %
Carbon, C	<= 0.080 %
Chromium, Cr	14 - 17 %
Cobalt, Co	<= 1.0 %
Copper, Cu	<= 0.50 %
Iron, Fe	5.0 - 9.0 %
Manganese, Mn	<= 1.0 %
Nickel, Ni	>= 70 %	Including Cobalt
Niobium, Nb (Columbium, Cb)	0.70 - 1.2 %	Includes Ta
Silicon, Si	<= 0.50 %
Sulfur, S	<= 0.010 %
Titanium, Ti	2.25 - 2.75 %

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NINC35 / 17404

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