3/4-Hard (H03) C78200 Nickel Silver
H03 C78200 nickel silver is C78200 nickel silver in the H03 (3/4 hard) temper. The graph bars on the material properties cards below compare H03 C78200 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
5.0 %
Poisson's Ratio
0.32
Rockwell B Hardness
84
Rockwell Superficial 30T Hardness
72
Shear Modulus
43 GPa 6.2 x 106 psi
Shear Strength
350 MPa 51 x 103 psi
Tensile Strength: Ultimate (UTS)
540 MPa 78 x 103 psi
Tensile Strength: Yield (Proof)
470 MPa 68 x 103 psi
Thermal Properties
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
160 °C 320 °F
Melting Completion (Liquidus)
1000 °C 1830 °F
Melting Onset (Solidus)
970 °C 1780 °F
Specific Heat Capacity
390 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
48 W/m-K 28 BTU/h-ft-°F
Thermal Expansion
19 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
11 % IACS
Electrical Conductivity: Equal Weight (Specific)
12 % IACS
Otherwise Unclassified Properties
Base Metal Price
28 % relative
Density
8.4 g/cm3 520 lb/ft3
Embodied Carbon
3.3 kg CO2/kg material
Embodied Energy
52 MJ/kg 22 x 103 BTU/lb
Embodied Water
310 L/kg 37 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
26 MJ/m3
Resilience: Unit (Modulus of Resilience)
990 kJ/m3
Stiffness to Weight: Axial
7.4 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
18 points
Thermal Diffusivity
15 mm2/s
Thermal Shock Resistance
18 points
Alloy Composition
| Cu | 63 to 67 | |
| Zn | 20.2 to 28.5 | |
| Ni | 7.0 to 9.0 | |
| Pb | 1.5 to 2.5 | |
| Mn | 0 to 0.5 | |
| Fe | 0 to 0.35 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015