EN 2.4856 (NiCr22Mo9Nb) Nickel Alloy
EN 2.4856 nickel is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. 2.4856 is the EN numeric designation for this material. NiCr22Mo9Nb is the EN chemical designation.
It has a moderately high base cost among wrought nickels. In addition, it has a moderately high embodied energy and a moderately low ductility.
The graph bars on the material properties cards below compare EN 2.4856 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
Brinell Hardness
210
Elastic (Young's, Tensile) Modulus
200 GPa 30 x 106 psi
Elongation at Break
28 %
Fatigue Strength
280 MPa 41 x 103 psi
Poisson's Ratio
0.29
Shear Modulus
79 GPa 11 x 106 psi
Shear Strength
570 MPa 83 x 103 psi
Tensile Strength: Ultimate (UTS)
880 MPa 130 x 103 psi
Tensile Strength: Yield (Proof)
430 MPa 62 x 103 psi
Thermal Properties
Latent Heat of Fusion
330 J/g
Maximum Temperature: Mechanical
1000 °C 1830 °F
Melting Completion (Liquidus)
1480 °C 2700 °F
Melting Onset (Solidus)
1430 °C 2600 °F
Specific Heat Capacity
440 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
10 W/m-K 5.8 BTU/h-ft-°F
Thermal Expansion
11 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
1.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
1.4 % IACS
Otherwise Unclassified Properties
Base Metal Price
80 % relative
Density
8.6 g/cm3 540 lb/ft3
Embodied Carbon
14 kg CO2/kg material
Embodied Energy
190 MJ/kg 83 x 103 BTU/lb
Embodied Water
290 L/kg 35 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
200 MJ/m3
Resilience: Unit (Modulus of Resilience)
440 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
23 points
Strength to Weight: Axial
28 points
Strength to Weight: Bending
24 points
Thermal Diffusivity
2.7 mm2/s
Thermal Shock Resistance
29 points
Alloy Composition
| Ni | 58 to 68.8 | |
| Cr | 20 to 23 | |
| Mo | 8.0 to 10 | |
| Nb | 3.2 to 4.2 | |
| Fe | 0 to 5.0 | |
| Co | 0 to 1.0 | |
| Mn | 0 to 0.5 | |
| Si | 0 to 0.5 | |
| Cu | 0 to 0.5 | |
| Al | 0 to 0.4 | |
| Ti | 0 to 0.4 | |
| C | 0.030 to 0.1 | |
| 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 10095: Heat resisting steels and nickel alloys
Engineering Properties of Nickel and Nickel Alloys, John L. Everhart, 1971
Nickel Alloys, Ulrich Heubner (editor), 1998