EN 2.4669 (NiCr15Fe7TiAl) Nickel Alloy
EN 2.4669 nickel is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the aged (precipitation hardened) condition. 2.4669 is the EN numeric designation for this material. NiCr15Fe7TiAl is the EN chemical designation.
It has a moderately low ductility and a moderately high tensile strength among wrought nickels.
The graph bars on the material properties cards below compare EN 2.4669 nickel to: wrought nickels (top), all nickel alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
190 GPa 27 x 106 psi
Elongation at Break
16 %
Fatigue Strength
390 MPa 56 x 103 psi
Impact Strength: V-Notched Charpy
25 J 18 ft-lb
Poisson's Ratio
0.29
Reduction in Area
31 %
Shear Modulus
73 GPa 11 x 106 psi
Shear Strength
680 MPa 99 x 103 psi
Tensile Strength: Ultimate (UTS)
1110 MPa 160 x 103 psi
Tensile Strength: Yield (Proof)
720 MPa 100 x 103 psi
Thermal Properties
Latent Heat of Fusion
310 J/g
Maximum Temperature: Mechanical
960 °C 1760 °F
Melting Completion (Liquidus)
1380 °C 2510 °F
Melting Onset (Solidus)
1330 °C 2430 °F
Specific Heat Capacity
460 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
12 W/m-K 6.9 BTU/h-ft-°F
Thermal Expansion
13 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
1.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
1.5 % IACS
Otherwise Unclassified Properties
Base Metal Price
60 % relative
Density
8.4 g/cm3 520 lb/ft3
Embodied Carbon
10 kg CO2/kg material
Embodied Energy
150 MJ/kg 64 x 103 BTU/lb
Embodied Water
260 L/kg 31 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
160 MJ/m3
Resilience: Unit (Modulus of Resilience)
1380 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
23 points
Strength to Weight: Axial
37 points
Strength to Weight: Bending
28 points
Thermal Diffusivity
3.1 mm2/s
Thermal Shock Resistance
33 points
Alloy Composition
| Ni | 65.9 to 77.7 | |
| Cr | 14 to 17 | |
| Fe | 5.0 to 9.0 | |
| Ti | 2.3 to 2.8 | |
| Nb | 0.7 to 1.2 | |
| Al | 0.4 to 1.0 | |
| Mn | 0 to 1.0 | |
| Co | 0 to 1.0 | |
| Si | 0 to 0.5 | |
| Cu | 0 to 0.5 | |
| C | 0 to 0.080 | |
| P | 0 to 0.020 | |
| S | 0 to 0.015 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
EN 10302: Creep resisting steels, nickel and cobalt alloys
EN 10269: Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
Engineering Properties of Nickel and Nickel Alloys, John L. Everhart, 1971
Nickel Alloys, Ulrich Heubner (editor), 1998