Inconel 718 is a precipitation hardened Nickel based super alloy that offers outstanding high temperature corrosion resistance properties. Commonly used in aerospace industry , Inconel alloy 718 offers elevated temperature mechanical strength as well as fine ductility up to 704oC/1300oF. It is non-magnetic in nature. Nickel based Super Alloy 718 offers good resistance to oxidation and other types of corrosion in space jet engine and land based gas turbine applications. It is an ideal material for applications that demand excellent resistance to creeping and stress corrosion cracking up to 982oC or 1800oF. Alloy 718 fully prevents pitting and crevice attack in sulfides, chlorides, carbon dioxide and other hostile environments.
Inconel® 718 is a precipitation-hardening nickel-chromium alloy containing significant amounts of iron, columbium, and molybdenum, along with lesser amounts of aluminum and titanium. 718 maintains high strength and good ductility up to 1300°F (704°C). This alloy has relatively good weldability, formability, and excellent cryogenic properties compared to other precipitation hardening nickel alloys. The sluggish precipitation hardening response of this alloy allows it to be readily welded without hardening or cracking. 718 alloy is non-magnetic. It maintains good corrosion resistance and oxidation resistance and is used for parts requiring high resistance to creep and stress rupture up to 1300°F (704°C) and oxidation resistance up to 1800°F (982°C).
|Element||Percent by Weight|
|Chromium||17.00 - 21.00|
|Nickel||50.00 - 55.00|
|Molybdenum||2.80 - 3.30|
|Columbium||4.75 - 5.50|
|Titanium||0.65 - 1.15|
|Aluminum||0.20 - 0.80|
|Annealed Condition||Aged Condition|
|Density||0.296 lb./in3 (8.19 g/cm3)||0.297 lb./in3 (8.22 g/cm3)|