EN 2.4632 (NiCr20Co18Ti) Nickel Alloy
EN 2.4632 nickel is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the aged (precipitation hardened) condition. 2.4632 is the EN numeric designation for this material. NiCr20Co18Ti is the EN chemical designation.
It has a moderately high tensile strength among wrought nickels. In addition, it has a moderately high heat capacity and a moderately low melting temperature.
The graph bars on the material properties cards below compare EN 2.4632 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 28 x 106 psi
Elongation at Break
17 %
Fatigue Strength
430 MPa 62 x 103 psi
Poisson's Ratio
0.29
Shear Modulus
76 GPa 11 x 106 psi
Shear Strength
770 MPa 110 x 103 psi
Tensile Strength: Ultimate (UTS)
1250 MPa 180 x 103 psi
Tensile Strength: Yield (Proof)
780 MPa 110 x 103 psi
Thermal Properties
Latent Heat of Fusion
320 J/g
Maximum Temperature: Mechanical
1010 °C 1850 °F
Melting Completion (Liquidus)
1340 °C 2450 °F
Melting Onset (Solidus)
1290 °C 2360 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
13 W/m-K 7.5 BTU/h-ft-°F
Thermal Expansion
12 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
75 % relative
Density
8.3 g/cm3 520 lb/ft3
Embodied Carbon
9.4 kg CO2/kg material
Embodied Energy
130 MJ/kg 58 x 103 BTU/lb
Embodied Water
350 L/kg 42 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
180 MJ/m3
Resilience: Unit (Modulus of Resilience)
1570 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
23 points
Strength to Weight: Axial
42 points
Strength to Weight: Bending
31 points
Thermal Diffusivity
3.3 mm2/s
Thermal Shock Resistance
39 points
Alloy Composition
| Ni | 49 to 64 | |
| Cr | 18 to 21 | |
| Co | 15 to 21 | |
| Ti | 2.0 to 3.0 | |
| Al | 1.0 to 2.0 | |
| Fe | 0 to 1.5 | |
| Mn | 0 to 1.0 | |
| Si | 0 to 1.0 | |
| Cu | 0 to 0.2 | |
| Zr | 0 to 0.15 | |
| C | 0 to 0.13 | |
| P | 0 to 0.020 | |
| B | 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
Engineering Properties of Nickel and Nickel Alloys, John L. Everhart, 1971
Nickel Alloys, Ulrich Heubner (editor), 1998