Matériaux
dédiés aux applications exigeantes

Inconel® Alloy 718

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

 

Composition chimique
Composition UNS N07718 %
Nickel 50.00 - 55.00
Fer Restant
Chrome 17.00 - 21.00
Niobium + Tantalum 4.75 - 5.50
Molybdène 2.80 - 3.30
Titane 0.65 - 1.15
Aluminium 0.20 - 0.80

 

Propriétés physiques
  Métrique Anglais
Densité 8.19 g/cm³ 0.296 lbs/in³
Modulus of elasticity 145 GPa 21 MPsi
Electrical resistivity 1.27 µohms/m 764 µohms/ft
Thermal conductivity 11.4 W/m-K 79.1 Btu-in/ft²hr-°F

 

Propriétés mécaniques
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

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