INCONEL® alloy 718

INCONEL® alloy 718 is a nickel-based age-hardenable alloy that possesses high strength at elevated temperatures.

 

Chemical composition

Composition

UNS N07718
%

Nickel 50.00 - 55.00
Iron Balance
Chromium 17.00 - 21.00
Niobium + Tantalum 4.75 - 5.50
Molybdenum 2.80 - 1.15
Titanium 0.65 - 1.15
Aluminum 0.20 - 0.80

 

Physical properties

  Metric English
Density 8.19 g/cm³ 0.296 lbs/in³
Modulus of Elasticity 145 GPa 21.0 Mpsi
Electrical Resistivity 1.27 µohm/m 764 µohm/ft
Thermal Conductivity 11.4 W/m-K 79.1 BTU-in/hr-ft²-°F

 

Mechanical properties

Cold worked
%

Yield strength

Ultimate tensile strength

Elongation
%

0 655 MPa [95 ksi] 876 MPa [127 ksi] 47
20 910 MPa [132 ksi] 1138 MPa [165 ksi] 2.2
37 1076 MPa [156 ksi] 1310 MPa [190 ksi] 2.5

50

1317 MPa [191 ksi] 1538 MPa [223 ksi] 1.9

60

1420 MPa [206 ksi] 1669 MPa [242 ksi] 2.2

68

1462 MPa [212 ksi] 1744 MPa [253 ksi] 2.4

75

1510 MPa [219 ksi] 1813 MPa [263 ksi] 2.9

80

1600 MPa [232 ksi] 1889 MPa [274 ksi] 2.4

84

1565 MPa [227 ksi] 1931 MPa [280 ksi] 2.7

87

1675 MPa [243 ksi] 2013 MPa [292 ksi] 2.7

90

1662 MPa [241 ksi] 2048 MPa [297 ksi] 2.8

92

1737 MPa [252 ksi] 2096 MPa [304 ksi] 2.7

* Values are typical and may not represent all diameters. Test method will affect results.
All data represent results from a 25.4 cm [10 in] test gauge length.

 

INCONEL® alloy 718

INCONEL® alloy 718 is a nickel-based age-hardenable alloy that possesses high strength at elevated temperatures.

 

Chemical composition

Composition

UNS N07718
%

Nickel 50.00 - 55.00
Iron Balance
Chromium 17.00 - 21.00
Niobium + Tantalum 4.75 - 5.50
Molybdenum 2.80 - 1.15
Titanium 0.65 - 1.15
Aluminum 0.20 - 0.80

 

Physical properties

  Metric English
Density 8.19 g/cm³ 0.296 lbs/in³
Modulus of Elasticity 145 GPa 21.0 Mpsi
Electrical Resistivity 1.27 µohm/m 764 µohm/ft
Thermal Conductivity 11.4 W/m-K 79.1 BTU-in/hr-ft²-°F

 

Mechanical properties

Cold worked
%

Yield strength

Ultimate tensile strength

Elongation
%

0 655 MPa [95 ksi] 876 MPa [127 ksi] 47
20 910 MPa [132 ksi] 1138 MPa [165 ksi] 2.2
37 1076 MPa [156 ksi] 1310 MPa [190 ksi] 2.5

50

1317 MPa [191 ksi] 1538 MPa [223 ksi] 1.9

60

1420 MPa [206 ksi] 1669 MPa [242 ksi] 2.2

68

1462 MPa [212 ksi] 1744 MPa [253 ksi] 2.4

75

1510 MPa [219 ksi] 1813 MPa [263 ksi] 2.9

80

1600 MPa [232 ksi] 1889 MPa [274 ksi] 2.4

84

1565 MPa [227 ksi] 1931 MPa [280 ksi] 2.7

87

1675 MPa [243 ksi] 2013 MPa [292 ksi] 2.7

90

1662 MPa [241 ksi] 2048 MPa [297 ksi] 2.8

92

1737 MPa [252 ksi] 2096 MPa [304 ksi] 2.7

* Values are typical and may not represent all diameters. Test method will affect results.
All data represent results from a 25.4 cm [10 in] test gauge length.