UNS N07773 Nickel Alloy
N07773 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 melting temperature and a moderately high embodied energy among wrought nickels.
The graph bars on the material properties cards below compare N07773 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 29 x 106 psi
Elongation at Break
40 %
Fatigue Strength
220 MPa 31 x 103 psi
Poisson's Ratio
0.29
Reduction in Area
56 %
Shear Modulus
77 GPa 11 x 106 psi
Shear Strength
480 MPa 70 x 103 psi
Tensile Strength: Ultimate (UTS)
710 MPa 100 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
990 °C 1810 °F
Melting Completion (Liquidus)
1510 °C 2750 °F
Melting Onset (Solidus)
1460 °C 2650 °F
Specific Heat Capacity
450 J/kg-K 0.11 BTU/lb-°F
Thermal Expansion
13 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
75 % relative
Density
8.5 g/cm3 530 lb/ft3
Embodied Carbon
13 kg CO2/kg material
Embodied Energy
180 MJ/kg 78 x 103 BTU/lb
Embodied Water
260 L/kg 31 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
23 points
Strength to Weight: Bending
21 points
Thermal Shock Resistance
20 points
Alloy Composition
| Ni | 45 to 60 | |
| Cr | 18 to 27 | |
| Fe | 0 to 32 | |
| Nb | 2.5 to 6.0 | |
| Mo | 2.5 to 5.5 | |
| W | 0 to 6.0 | |
| Al | 0 to 2.0 | |
| Ti | 0 to 2.0 | |
| Mn | 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
Welding Metallurgy and Weldability of Nickel-Base Alloys, John C. Lippold et al., 2009
Engineering Properties of Nickel and Nickel Alloys, John L. Everhart, 1971
Nickel Alloys, Ulrich Heubner (editor), 1998