UNS N07776 Nickel Alloy
N07776 nickel is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition.
It has a moderately high base cost among wrought nickels. In addition, it has a moderately high embodied energy and a moderately high melting temperature.
The graph bars on the material properties cards below compare N07776 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 30 x 106 psi
Elongation at Break
39 %
Fatigue Strength
220 MPa 32 x 103 psi
Poisson's Ratio
0.3
Reduction in Area
57 %
Shear Modulus
79 GPa 11 x 106 psi
Shear Strength
470 MPa 69 x 103 psi
Tensile Strength: Ultimate (UTS)
700 MPa 100 x 103 psi
Tensile Strength: Yield (Proof)
270 MPa 40 x 103 psi
Thermal Properties
Latent Heat of Fusion
320 J/g
Maximum Temperature: Mechanical
970 °C 1770 °F
Melting Completion (Liquidus)
1550 °C 2830 °F
Melting Onset (Solidus)
1500 °C 2730 °F
Specific Heat Capacity
430 J/kg-K 0.1 BTU/lb-°F
Thermal Expansion
12 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
85 % relative
Density
8.6 g/cm3 540 lb/ft3
Embodied Carbon
15 kg CO2/kg material
Embodied Energy
210 MJ/kg 89 x 103 BTU/lb
Embodied Water
270 L/kg 32 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
220 MJ/m3
Resilience: Unit (Modulus of Resilience)
180 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
23 points
Strength to Weight: Axial
22 points
Strength to Weight: Bending
20 points
Thermal Shock Resistance
20 points
Alloy Composition
| Ni | 50 to 60 | |
| Cr | 12 to 22 | |
| Fe | 0 to 24.5 | |
| Mo | 9.0 to 15 | |
| Nb | 4.0 to 6.0 | |
| W | 0.5 to 2.5 | |
| Al | 0 to 2.0 | |
| Mn | 0 to 1.0 | |
| Ti | 0 to 1.0 | |
| Si | 0 to 0.5 | |
| C | 0 to 0.030 | |
| P | 0 to 0.030 | |
| S | 0 to 0.010 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM B805: Standard Specification for Precipitation Hardening Nickel Alloys UNS N07716, N07725, N07773, N07776, and N09777, Bar and Wire
Microstructure of Superalloys, Madeleine Durand-Charre, 1998
Aerospace Materials, Brian Cantor et al. (editors), 2001
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