EN 2.4878 (NiCr25Co20TiMo) Nickel Alloy
EN 2.4878 nickel is a nickel alloy formulated for primary forming into wrought products. 2.4878 is the EN numeric designation for this material. NiCr25Co20TiMo is the EN chemical designation.
It has a moderately high base cost among wrought nickels. In addition, it can have a moderately high tensile strength and a moderately low ductility.
The properties of EN 2.4878 nickel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare EN 2.4878 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
200 GPa 29 x 106 psi
Elongation at Break
13 to 17 %
Fatigue Strength
400 to 410 MPa 58 to 59 x 103 psi
Poisson's Ratio
0.29
Shear Modulus
78 GPa 11 x 106 psi
Shear Strength
750 to 760 MPa 110 x 103 psi
Tensile Strength: Ultimate (UTS)
1210 to 1250 MPa 180 x 103 psi
Tensile Strength: Yield (Proof)
740 to 780 MPa 110 x 103 psi
Thermal Properties
Latent Heat of Fusion
330 J/g
Maximum Temperature: Mechanical
1030 °C 1890 °F
Melting Completion (Liquidus)
1370 °C 2490 °F
Melting Onset (Solidus)
1320 °C 2410 °F
Specific Heat Capacity
460 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
11 W/m-K 6.3 BTU/h-ft-°F
Thermal Expansion
12 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
80 % relative
Density
8.3 g/cm3 520 lb/ft3
Embodied Carbon
10 kg CO2/kg material
Embodied Energy
150 MJ/kg 64 x 103 BTU/lb
Embodied Water
370 L/kg 44 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
150 to 180 MJ/m3
Resilience: Unit (Modulus of Resilience)
1370 to 1540 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
41 to 42 points
Strength to Weight: Bending
31 points
Thermal Diffusivity
2.8 mm2/s
Thermal Shock Resistance
37 to 39 points
Alloy Composition
| Ni | 43.6 to 52.2 | |
| Cr | 23 to 25 | |
| Co | 19 to 21 | |
| Ti | 2.8 to 3.2 | |
| Mo | 1.0 to 2.0 | |
| Al | 1.2 to 1.6 | |
| Nb | 0.7 to 1.2 | |
| Fe | 0 to 1.0 | |
| Si | 0 to 0.5 | |
| Mn | 0 to 0.5 | |
| Cu | 0 to 0.2 | |
| Zr | 0.030 to 0.070 | |
| C | 0.030 to 0.070 | |
| Ta | 0 to 0.050 | |
| B | 0.010 to 0.015 | |
| P | 0 to 0.010 | |
| S | 0 to 0.0070 |
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