C78200 Nickel Silver vs. C68800 Brass
Both C78200 nickel silver and C68800 brass are copper alloys. They have 88% of their average alloy composition in common.
For each property being compared, the top bar is C78200 nickel silver and the bottom bar is C68800 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 3.0 to 40 | |
| 2.0 to 36 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Rockwell B Hardness | 65 to 90 | |
| 81 to 99 |
| Rockwell Superficial 30T Hardness | 63 to 75 | |
| 71 to 83 |
| Shear Modulus, GPa | 43 | |
| 41 |
| Shear Strength, MPa | 280 to 400 | |
| 380 to 510 |
| Tensile Strength: Ultimate (UTS), MPa | 370 to 630 | |
| 570 to 890 |
| Tensile Strength: Yield (Proof), MPa | 170 to 570 | |
| 390 to 790 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 160 |
| Melting Completion (Liquidus), °C | 1000 | |
| 960 |
| Melting Onset (Solidus), °C | 970 | |
| 950 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 400 |
| Thermal Conductivity, W/m-K | 48 | |
| 40 |
| Thermal Expansion, µm/m-K | 19 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 18 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 12 | |
| 20 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 28 | |
| 26 |
| Density, g/cm3 | 8.4 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 3.3 | |
| 2.8 |
| Embodied Energy, MJ/kg | 52 | |
| 48 |
| Embodied Water, L/kg | 310 | |
| 350 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 18 to 120 | |
| 16 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 to 1440 | |
| 710 to 2860 |
| Stiffness to Weight: Axial, points | 7.4 | |
| 7.3 |
| Stiffness to Weight: Bending, points | 19 | |
| 19 |
| Strength to Weight: Axial, points | 12 to 21 | |
| 19 to 30 |
| Strength to Weight: Bending, points | 14 to 19 | |
| 19 to 25 |
| Thermal Diffusivity, mm2/s | 15 | |
| 12 |
| Thermal Shock Resistance, points | 12 to 21 | |
| 19 to 30 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 3.0 to 3.8 |
| Cobalt (Co), % | 0 | |
| 0.25 to 0.55 |
| Copper (Cu), % | 63 to 67 | |
| 70.8 to 75.5 |
| Iron (Fe), % | 0 to 0.35 | |
| 0 to 0.2 |
| Lead (Pb), % | 1.5 to 2.5 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 7.0 to 9.0 | |
| 0 |
| Zinc (Zn), % | 20.2 to 28.5 | |
| 21.3 to 24.1 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.5 |