UNS C73100 Nickel Silver
C73100 nickel silver is a copper-nickel alloy formulated for primary forming into wrought products. It has a moderately low embodied energy among the wrought copper-nickels in the database.
The properties of C73100 nickel silver include three common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare C73100 nickel silver to: wrought copper-nickels (top), all copper 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
110 GPa 16 x 106 psi
Elongation at Break
3.4 to 8.0 %
Poisson's Ratio
0.32
Shear Modulus
43 GPa 6.2 x 106 psi
Shear Strength
260 to 370 MPa 38 to 53 x 103 psi
Tensile Strength: Ultimate (UTS)
450 to 640 MPa 65 to 93 x 103 psi
Tensile Strength: Yield (Proof)
420 to 590 MPa 62 to 86 x 103 psi
Thermal Properties
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
170 °C 330 °F
Melting Completion (Liquidus)
1030 °C 1880 °F
Melting Onset (Solidus)
1000 °C 1830 °F
Specific Heat Capacity
390 J/kg-K 0.093 BTU/lb-°F
Thermal Conductivity
35 W/m-K 20 BTU/h-ft-°F
Thermal Expansion
19 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
7.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.0 % IACS
Otherwise Unclassified Properties
Base Metal Price
28 % relative
Density
8.4 g/cm3 530 lb/ft3
Embodied Carbon
3.0 kg CO2/kg material
Embodied Energy
49 MJ/kg 21 x 103 BTU/lb
Embodied Water
310 L/kg 37 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
21 to 35 MJ/m3
Resilience: Unit (Modulus of Resilience)
790 to 1560 kJ/m3
Stiffness to Weight: Axial
7.5 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
15 to 21 points
Strength to Weight: Bending
15 to 20 points
Thermal Diffusivity
11 mm2/s
Thermal Shock Resistance
15 to 21 points
Alloy Composition
Among wrought copper alloys, the composition of C73100 nickel silver is notable for including manganese (Mn) and tin (Sn). Manganese is used to improve strength without a proportional reduction in ductility. Tin is used to improve strength, bearing properties, and corrosion resistance against certain types of media.
| Cu | 70.8 to 78 | |
| Zn | 18 to 22 | |
| Ni | 4.0 to 6.0 | |
| Mn | 0 to 0.5 | |
| Fe | 0 to 0.1 | |
| Sn | 0 to 0.1 | |
| Pb | 0 to 0.050 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015