C72900 Copper-nickel vs. ASTM B541 Gold
C72900 copper-nickel belongs to the copper alloys classification, while ASTM B541 gold belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is C72900 copper-nickel and the bottom bar is ASTM B541 gold.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 110 |
| Elongation at Break, % | 6.0 to 20 | |
| 6.0 to 14 |
| Poisson's Ratio | 0.34 | |
| 0.4 |
| Shear Modulus, GPa | 45 | |
| 38 |
| Shear Strength, MPa | 540 to 630 | |
| 410 to 690 |
| Tensile Strength: Ultimate (UTS), MPa | 870 to 1080 | |
| 670 to 1180 |
| Tensile Strength: Yield (Proof), MPa | 700 to 920 | |
| 480 to 900 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 90 |
| Melting Completion (Liquidus), °C | 1120 | |
| 1110 |
| Melting Onset (Solidus), °C | 950 | |
| 930 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 170 |
| Thermal Expansion, µm/m-K | 17 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.8 | |
| 7.7 to 12 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
| 4.0 to 6.2 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.8 | |
| 17 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 49 to 210 | |
| 65 to 91 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2030 to 3490 | |
| 1090 to 3830 |
| Stiffness to Weight: Axial, points | 7.6 | |
| 3.4 |
| Stiffness to Weight: Bending, points | 19 | |
| 9.0 |
| Strength to Weight: Axial, points | 27 to 34 | |
| 11 to 19 |
| Strength to Weight: Bending, points | 23 to 27 | |
| 9.8 to 14 |
| Thermal Shock Resistance, points | 31 to 38 | |
| 36 to 63 |
Alloy Composition
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| Copper (Cu), % | 74.1 to 78 | |
| 13.5 to 15.5 |
| Gold (Au), % | 0 | |
| 70.5 to 72.5 |
| Iron (Fe), % | 0 to 0.5 | |
| 0 |
| Lead (Pb), % | 0 to 0.020 | |
| 0 |
| Magnesium (Mg), % | 0 to 0.15 | |
| 0 |
| Manganese (Mn), % | 0 to 0.3 | |
| 0 |
| Nickel (Ni), % | 14.5 to 15.5 | |
| 0 |
| Niobium (Nb), % | 0 to 0.1 | |
| 0 |
| Platinum (Pt), % | 0 | |
| 8.0 to 9.0 |
| Silver (Ag), % | 0 | |
| 4.0 to 5.0 |
| Tin (Sn), % | 7.5 to 8.5 | |
| 0 |
| Zinc (Zn), % | 0 to 0.5 | |
| 0.7 to 1.3 |
| Residuals, % | 0 to 0.3 | |
| 0 to 0.4 |