ATI Allvac® 718 Nickel Superalloy, Heat Treatment: 982°C (1800°F) + Age

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ATI Allvac® 718 Nickel Superalloy, Heat Treatment: 982°C (1800°F) + Age
Categories:	Metal; Nonferrous Metal; Nickel Alloy; Superalloy
Material Notes:	Data provided by Allvac. Applications: Jet engine rings, discs, shafts, compressor blades, seals, spacers. Fasteners, nuclear, oil & gas components.
Key Words:	UNS N07718; AMS 5662, 5663, 5664. MIL-N-24469, RDT M2-18T, ASTM B 637, Allvac, an Allegheny Teledyne Company
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Physical Properties	Metric	English	Comments

Density	8.19 g/cc	0.296 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	389	389	Estimated from Rockwell C value for Brinell test with 3000 kg load/10 mm diameter ball
Hardness, Knoop	425	425	Estimated from Rockwell C value.
Hardness, Rockwell C	42	42
Hardness, Vickers	407	407	Estimated from Rockwell C value.
Tensile Strength, Ultimate	1345 MPa	195100 psi
Tensile Strength, Yield	1104 MPa @Strain 0.2 %	160100 psi @Strain 0.2 %
Elongation at Break	22 %	22 %
Reduction of Area	35 %	35 %

Component Elements Properties	Metric	English	Comments
Aluminum, Al	0.50 %	0.50 %
Carbon, C	0.020 %	0.020 %
Chromium, Cr	19 %	19 %
Iron, Fe	17 %	17 %	as balance
Molybdenum, Mo	3.1 %	3.1 %
Nickel, Ni	54 %	54 %
Niobium, Nb (Columbium, Cb)	5.2 %	5.2 %
Titanium, Ti	0.90 %	0.90 %

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