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|
Grade |
Code |
UNS |
Nickel Alloys |
|
Inconel 718 |
Alloy 718 (2.4668) |
N07718 |
Nickel Alloy Properties
Alloy 718 is an age-hardened nickel-chromium alloy containing also significant amounts of iron, niobium and molybdenum along with lesser amounts of aluminum and titanium. This provides a high strength alloy combined with corrosion resistance. Service temperatures range from -250°C to about 650°C. This alloy has also very good weld ability.
Chemical Composition (Inconel 718)
|
Ni % |
Cr % |
NB+Ta % |
Mo % |
Mn % |
Si % |
Al % |
Ti % |
Cu % |
Fe % |
|
55,00 – 58,00 |
17,00 – 21,00 |
4,75 – 5,50 |
2,80 – 3,30 |
0,35 max. |
0,35 max. |
0,20 – 0,80 |
0,65 – 1,05 |
0,30 max. |
Balance |
Mechanical Properties
|
Product Form |
Rp0.2, Mpa |
Rm, Mpa |
Elongation [%] |
Hardness[HB] |
Density [g/cm3] |
|
Bar & Rod |
725 – 1000 |
895 – 1250 |
≥ 30 |
248 – 363 |
8,2 |
Suitable For
Alloy 718 was originally developed for the aerospace industry, and is now not only used in engines, gas turbines, or other components of the aircraft industry, but also in nuclear reactors, springs and high-strength bolts. In the oil and gas industry Alloy718 is also very popular because of its corrosion resistance and strength.
Remarks
Service temperatures range from -250°C to about 650°C. This alloy has also very good weld ability.
Specification
Inconel 718, Alloy 718 (2.4668), N07718.
Norm
ASTM B637, B670, B906, NACE MR0175.
