Special Metals INCONEL® 718SPF™ Nickel Superalloy, Annealed + Aged

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Special Metals INCONEL® 718SPF™ Nickel Superalloy, Annealed + Aged
Categories:	Metal; Nonferrous Metal; Nickel Alloy; Superalloy
Material Notes:	Typical annealing - continuous process anneal, 1700°F (927°C) at 15 ft (4.57 m) per minute. This produces ASTM No. 12 grain size. Typical aging - 1750°F (954°C)/1 h/AC plus 1325°F (719°C)/8 h/FC at 100°F (56°C)/h to 1150°F (621°C) plus 1150°F (621°C)/8 h/AC. Heat capacity, melting range, moduli, and Poisson's ratio reported herein are typical of INCONEL® alloy 718SPF (not necessarily annealed + aged samples). Data provided by the manufacturer, Special Metals.
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Physical Properties	Original Value	Comments

Density	0.297 lb/in³

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	45
Tensile Strength, Ultimate	225000 psi
Tensile Strength, Yield	202000 psi @Strain 0.2 %
Elongation at Break	16 %
Modulus of Elasticity	205 GPa	cold-rolled, heat treated sheet
Poissons Ratio	0.294	cold-rolled, heat treated sheet
Shear Modulus	80.0 GPa	cold-rolled, heat treated sheet

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000120 ohm-cm
Magnetic Permeability	1.0011	at 200 Oersted (15.9 kA/m); Annealed
Curie Temperature	-113 °C

Thermal Properties	Original Value	Comments
CTE, linear	12.15 µm/m-°C @Temperature 21.0 - 93.0 °C	Mean
	13.77 µm/m-°C @Temperature 21.0 - 316 °C	Mean
	14.4 µm/m-°C @Temperature 21.0 - 538 °C	Mean
Specific Heat Capacity	0.435 J/g-°C
Thermal Conductivity	11.4 W/m-K
Melting Point	1260 - 1335 °C
Solidus	1260 °C
Liquidus	1335 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	0.20 - 0.80 %
Boron, B	<= 0.0060 %
Carbon, C	<= 0.050 %
Chromium, Cr	17 - 21 %
Cobalt, Co	<= 1.0 %
Copper, Cu	<= 0.30 %
Iron, Fe	19 %	As remainder
Manganese, Mn	<= 0.35 %
Molybdenum, Mo	2.8 - 3.3 %
Nickel, Ni	50 - 55 %	Including Cobalt
Niobium, Nb (Columbium, Cb)	4.75 - 5.25 %	Includes Ta
Nitrogen, N	<= 0.010 %
Phosphorus, P	<= 0.015 %
Silicon, Si	<= 0.35 %
Sulfur, S	<= 0.0020 %
Titanium, Ti	0.65 - 1.15 %

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