18K Yellow Gold (Au-12.5Cu-12.5Ag) vs Pure Palladium (Pd 99.9%)
Property comparison of 18K Yellow Gold (Au-12.5Cu-12.5Ag) and Pure Palladium (Pd 99.9%), both precious metal.
| Property | 18K Yellow Gold (Au-12.5Cu-12.5Ag) | Pure Palladium (Pd 99.9%) | Difference |
|---|---|---|---|
| Tensile strength | 300 MPa | 135 MPa | -55% |
| Elastic modulus | 75,000 MPa | 121,000 MPa | +61% |
| Density | 15,500 kg/m³ | 12,020 kg/m³ | -22% |
| Thermal conductivity | 320 W/m·K | 72 W/m·K | -78% |
| Specific heat | 200 J/kg·K | 245 J/kg·K | +23% |
| Coefficient of thermal expansion | 0.000014 1/K | 0.000012 1/K | -20% |
| Melting point | 912 °C | 1,554 °C | +70% |
Difference is Pure Palladium (Pd 99.9%) relative to 18K Yellow Gold (Au-12.5Cu-12.5Ag). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- 18K yellow
- standard
- Smithells Metals Reference Book 8th Ed.
- heat treatment
- annealed
- grade
- commercially pure
- standard
- AZoM Article ID 1339 / Smithells Metals Reference Book
- heat treatment
- annealed
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