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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.