C18700 Copper vs. ASTM B541 Gold
C18700 copper 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 C18700 copper and the bottom bar is ASTM B541 gold.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 9.0 to 9.6 | |
| 6.0 to 14 |
| Poisson's Ratio | 0.34 | |
| 0.4 |
| Shear Modulus, GPa | 43 | |
| 38 |
| Shear Strength, MPa | 170 to 190 | |
| 410 to 690 |
| Tensile Strength: Ultimate (UTS), MPa | 290 to 330 | |
| 670 to 1180 |
| Tensile Strength: Yield (Proof), MPa | 230 to 250 | |
| 480 to 900 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 90 |
| Melting Completion (Liquidus), °C | 1080 | |
| 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 | 98 | |
| 7.7 to 12 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 99 | |
| 4.0 to 6.2 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.0 | |
| 17 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 24 to 29 | |
| 65 to 91 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 240 to 280 | |
| 1090 to 3830 |
| Stiffness to Weight: Axial, points | 7.1 | |
| 3.4 |
| Stiffness to Weight: Bending, points | 18 | |
| 9.0 |
| Strength to Weight: Axial, points | 9.0 to 10 | |
| 11 to 19 |
| Strength to Weight: Bending, points | 11 to 12 | |
| 9.8 to 14 |
| Thermal Shock Resistance, points | 10 to 12 | |
| 36 to 63 |
Alloy Composition
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| Copper (Cu), % | 98 to 99.2 | |
| 13.5 to 15.5 |
| Gold (Au), % | 0 | |
| 70.5 to 72.5 |
| Lead (Pb), % | 0.8 to 1.5 | |
| 0 |
| Platinum (Pt), % | 0 | |
| 8.0 to 9.0 |
| Silver (Ag), % | 0 | |
| 4.0 to 5.0 |
| Zinc (Zn), % | 0 | |
| 0.7 to 1.3 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.4 |