Annealed (OS025) C75400 Nickel Silver
OS025 C75400 nickel silver is C75400 nickel silver in the OS025 (annealed to 0.025mm grain size) temper. It has the second lowest strength and second highest ductility compared to the other variants of C75400 nickel silver.
The graph bars on the material properties cards below compare OS025 C75400 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
37 %
Poisson's Ratio
0.32
Rockwell F Hardness
82
Rockwell Superficial 30T Hardness
46
Shear Modulus
46 GPa 6.6 x 106 psi
Shear Strength
270 MPa 40 x 103 psi
Tensile Strength: Ultimate (UTS)
410 MPa 59 x 103 psi
Tensile Strength: Yield (Proof)
180 MPa 26 x 103 psi
Thermal Properties
Latent Heat of Fusion
200 J/g
Maximum Temperature: Mechanical
190 °C 370 °F
Melting Completion (Liquidus)
1080 °C 1970 °F
Melting Onset (Solidus)
1040 °C 1900 °F
Specific Heat Capacity
390 J/kg-K 0.094 BTU/lb-°F
Thermal Conductivity
36 W/m-K 21 BTU/h-ft-°F
Thermal Expansion
18 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
7.0 % IACS
Electrical Conductivity: Equal Weight (Specific)
7.4 % IACS
Otherwise Unclassified Properties
Base Metal Price
32 % relative
Density
8.5 g/cm3 530 lb/ft3
Embodied Carbon
3.8 kg CO2/kg material
Embodied Energy
59 MJ/kg 25 x 103 BTU/lb
Embodied Water
300 L/kg 36 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m3
Resilience: Unit (Modulus of Resilience)
130 kJ/m3
Stiffness to Weight: Axial
7.9 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
13 points
Strength to Weight: Bending
14 points
Thermal Diffusivity
11 mm2/s
Thermal Shock Resistance
13 points
Alloy Composition
| Cu | 63.5 to 66.5 | |
| Zn | 16.2 to 22.5 | |
| Ni | 14 to 16 | |
| Mn | 0 to 0.5 | |
| Fe | 0 to 0.25 | |
| Pb | 0 to 0.1 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.