ATI Allegheny Ludlum Altemp® 718 Nickel-Base Superalloy, Solution Treated Sheet and Strip, UNS N07718

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ATI Allegheny Ludlum Altemp® 718 Nickel-Base Superalloy, Solution Treated Sheet and Strip, UNS N07718
Categories:	Metal; Nonferrous Metal; Nickel Alloy; Superalloy
Material Notes:	Allegheny Ludlum Altemp 718 alloy is an austenitic nickel-base superalloy which is used in applications requiring high strength to approximately 760 degrees Celsius and oxidation resistance to approximately 982 degrees Celsius. In addition, the alloy exhibits excellent tensile and impact strength even at cryogenic temperatures. High strength at room and elevated temperatures is developed by a precipitation heat treatment at 718 degrees Celsius with cooling and a hold at 621°C. The relatively slow response to precipitation hardening permits repair welding of the Altemp 718 alloy even in the aged condition. The Altemp 718 alloy is usually produced by a double melt practice using consumable electrode remelt procedures to provide homogeneity and extremely clean structures. Specific uses include aircraft ducting and engine plumbing. Tensile properties below are from AMS 5596 and/or AMS 5597. Information provided by Allegheny Ludlum
Key Words:	DIN 2.4668; ASTM B-670; AMS 5596; AMS 5597
Vendors:

Available Properties

Density
Hardness, Rockwell B, Typical Annealed
Tensile Strength, Ultimate
Tensile Strength, Yield
Elongation at Break, in 2"
Modulus of Elasticity
Poissons Ratio
Shear Modulus
Electrical Resistivity
CTE, linear
CTE, linear
CTE, linear
Thermal Conductivity
Maximum Service Temperature, Air, oxidation resistance to this temp
Aluminum, Al
Boron, B
Carbon, C
Chromium, Cr
Cobalt, Co
Copper, Cu
Iron, Fe, as balance
Manganese, Mn
Molybdenum, Mo
Nickel, Ni
Niobium, Nb (Columbium, Cb)
Phosphorus, P
Silicon, Si
Sulfur, S
Titanium, Ti

Property Data

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Manufacturer Notes:
ATI Allegheny Ludlum, Allegheny Technologies Incorporated

Category Notes
none

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