EN 2.4951 (NiCr20Ti) Nickel Alloy
EN 2.4951 nickel is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the solution annealed (AT) condition. 2.4951 is the EN numeric designation for this material. NiCr20Ti is the EN chemical designation.
The graph bars on the material properties cards below compare EN 2.4951 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
200
Elastic (Young's, Tensile) Modulus
190 GPa 28 x 106 psi
Elongation at Break
34 %
Fatigue Strength
200 MPa 28 x 103 psi
Poisson's Ratio
0.29
Shear Modulus
76 GPa 11 x 106 psi
Shear Strength
500 MPa 72 x 103 psi
Tensile Strength: Ultimate (UTS)
750 MPa 110 x 103 psi
Tensile Strength: Yield (Proof)
270 MPa 39 x 103 psi
Thermal Properties
Latent Heat of Fusion
320 J/g
Maximum Temperature: Mechanical
1150 °C 2100 °F
Melting Completion (Liquidus)
1360 °C 2470 °F
Melting Onset (Solidus)
1310 °C 2390 °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
12 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
1.6 % IACS
Electrical Conductivity: Equal Weight (Specific)
1.7 % IACS
Otherwise Unclassified Properties
Base Metal Price
60 % relative
Density
8.5 g/cm3 530 lb/ft3
Embodied Carbon
9.3 kg CO2/kg material
Embodied Energy
130 MJ/kg 56 x 103 BTU/lb
Embodied Water
280 L/kg 34 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
200 MJ/m3
Resilience: Unit (Modulus of Resilience)
190 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
23 points
Strength to Weight: Axial
25 points
Strength to Weight: Bending
22 points
Thermal Diffusivity
3.1 mm2/s
Thermal Shock Resistance
23 points
Alloy Composition
| Ni | 65.4 to 81.7 | |
| Cr | 18 to 21 | |
| Fe | 0 to 5.0 | |
| Co | 0 to 5.0 | |
| Mn | 0 to 1.0 | |
| Si | 0 to 1.0 | |
| Ti | 0.2 to 0.6 | |
| Cu | 0 to 0.5 | |
| Al | 0 to 0.3 | |
| C | 0.080 to 0.15 | |
| 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