Annealed (OS035) C77000 Nickel Silver
OS035 C77000 nickel silver is C77000 nickel silver in the OS035 (annealed to 0.035mm grain size) temper. It has the lowest strength and highest ductility compared to the other variants of C77000 nickel silver.
The graph bars on the material properties cards below compare OS035 C77000 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
120 GPa 17 x 106 psi
Elongation at Break
40 %
Poisson's Ratio
0.31
Rockwell B Hardness
52
Rockwell F Hardness
87
Rockwell Superficial 30T Hardness
49
Shear Modulus
46 GPa 6.7 x 106 psi
Shear Strength
280 MPa 41 x 103 psi
Tensile Strength: Ultimate (UTS)
420 MPa 60 x 103 psi
Tensile Strength: Yield (Proof)
190 MPa 27 x 103 psi
Thermal Properties
Latent Heat of Fusion
200 J/g
Maximum Temperature: Mechanical
180 °C 360 °F
Melting Completion (Liquidus)
1050 °C 1930 °F
Melting Onset (Solidus)
1000 °C 1840 °F
Specific Heat Capacity
400 J/kg-K 0.095 BTU/lb-°F
Thermal Conductivity
29 W/m-K 17 BTU/h-ft-°F
Thermal Expansion
17 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
5.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
6.0 % IACS
Otherwise Unclassified Properties
Base Metal Price
31 % relative
Density
8.3 g/cm3 520 lb/ft3
Embodied Carbon
4.1 kg CO2/kg material
Embodied Energy
63 MJ/kg 27 x 103 BTU/lb
Embodied Water
300 L/kg 36 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
140 MJ/m3
Resilience: Unit (Modulus of Resilience)
140 kJ/m3
Stiffness to Weight: Axial
8.1 points
Stiffness to Weight: Bending
20 points
Strength to Weight: Axial
14 points
Strength to Weight: Bending
15 points
Thermal Diffusivity
8.8 mm2/s
Thermal Shock Resistance
15 points
Alloy Composition
| Cu | 53.5 to 56.5 | |
| Zn | 22.7 to 30 | |
| Ni | 16.5 to 19.5 | |
| Mn | 0 to 0.5 | |
| Fe | 0 to 0.25 | |
| Pb | 0 to 0.050 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B122: Standard Specification for Copper-Nickel-Tin Alloy, Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-Nickel Alloy Plate, Sheet, Strip, and Rolled Bar
Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993