Nickel Alloy 80A (2.4631, N07080, NA20)
Nickel 80A is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the aged (precipitation hardened) condition. 2.4631 is the EN numeric designation for this material. NA20 is the British Standard (BS) designation. N07080 is the UNS number. And Nickel Alloy 80A is the common industry name.
It has a moderately high heat capacity among wrought nickels. In addition, it has a moderately high tensile strength and a moderately low ductility.
The graph bars on the material properties cards below compare nickel 80A 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
190 GPa 28 x 106 psi
Elongation at Break
22 %
Fatigue Strength
430 MPa 62 x 103 psi
Poisson's Ratio
0.29
Shear Modulus
74 GPa 11 x 106 psi
Shear Strength
660 MPa 96 x 103 psi
Tensile Strength: Ultimate (UTS)
1040 MPa 150 x 103 psi
Tensile Strength: Yield (Proof)
710 MPa 100 x 103 psi
Thermal Properties
Latent Heat of Fusion
320 J/g
Maximum Temperature: Mechanical
980 °C 1790 °F
Melting Completion (Liquidus)
1360 °C 2470 °F
Melting Onset (Solidus)
1310 °C 2390 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
11 W/m-K 6.5 BTU/h-ft-°F
Thermal Expansion
13 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
55 % relative
Density
8.3 g/cm3 520 lb/ft3
Embodied Carbon
9.8 kg CO2/kg material
Embodied Energy
140 MJ/kg 60 x 103 BTU/lb
Embodied Water
280 L/kg 34 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
210 MJ/m3
Resilience: Unit (Modulus of Resilience)
1300 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
23 points
Strength to Weight: Axial
35 points
Strength to Weight: Bending
27 points
Thermal Diffusivity
2.9 mm2/s
Thermal Shock Resistance
31 points
Alloy Composition
| Ni | 69.4 to 79.7 | |
| Cr | 18 to 21 | |
| Ti | 1.8 to 2.7 | |
| Fe | 0 to 3.0 | |
| Al | 0.5 to 1.8 | |
| Mn | 0 to 1.0 | |
| Si | 0 to 1.0 | |
| C | 0 to 0.1 | |
| S | 0 to 0.015 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM B637: Standard Specification for Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock for High-Temperature Service
Machining of Stainless Steels and Super Alloys: Traditional and Nontraditional Techniques, Helmi A. Youssef, 2016
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