EN 2.4650 (NiCo20Cr20MoTi) Nickel Alloy
EN 2.4650 nickel is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the aged (precipitation hardened) condition. 2.4650 is the EN numeric designation for this material. NiCo20Cr20MoTi is the EN chemical designation.
It has a moderately high base cost and a moderately high tensile strength among wrought nickels.
The graph bars on the material properties cards below compare EN 2.4650 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
210 GPa 30 x 106 psi
Elongation at Break
34 %
Fatigue Strength
480 MPa 69 x 103 psi
Poisson's Ratio
0.29
Shear Modulus
80 GPa 12 x 106 psi
Shear Strength
730 MPa 110 x 103 psi
Tensile Strength: Ultimate (UTS)
1090 MPa 160 x 103 psi
Tensile Strength: Yield (Proof)
650 MPa 94 x 103 psi
Thermal Properties
Latent Heat of Fusion
320 J/g
Maximum Temperature: Mechanical
1010 °C 1860 °F
Melting Completion (Liquidus)
1400 °C 2560 °F
Melting Onset (Solidus)
1350 °C 2470 °F
Specific Heat Capacity
450 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
12 W/m-K 6.9 BTU/h-ft-°F
Thermal Expansion
11 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
1.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
1.6 % IACS
Otherwise Unclassified Properties
Base Metal Price
80 % relative
Density
8.5 g/cm3 530 lb/ft3
Embodied Carbon
10 kg CO2/kg material
Embodied Energy
140 MJ/kg 61 x 103 BTU/lb
Embodied Water
360 L/kg 43 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
320 MJ/m3
Resilience: Unit (Modulus of Resilience)
1030 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
23 points
Strength to Weight: Axial
36 points
Strength to Weight: Bending
28 points
Thermal Diffusivity
3.1 mm2/s
Thermal Shock Resistance
33 points
Alloy Composition
| Ni | 46.9 to 54.2 | |
| Cr | 19 to 21 | |
| Co | 19 to 21 | |
| Mo | 5.6 to 6.1 | |
| Ti | 1.9 to 2.4 | |
| Al | 0.3 to 0.6 | |
| Fe | 0 to 0.7 | |
| Mn | 0 to 0.6 | |
| Si | 0 to 0.4 | |
| Cu | 0 to 0.2 | |
| C | 0.040 to 0.080 | |
| P | 0 to 0.020 | |
| S | 0 to 0.0070 | |
| B | 0 to 0.0050 |
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
Engineering Properties of Nickel and Nickel Alloys, John L. Everhart, 1971
Nickel Alloys, Ulrich Heubner (editor), 1998
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015