Pure Gold (Au 99.99%) vs Pure Silver (Ag 99.9%)
Property comparison of Pure Gold (Au 99.99%) and Pure Silver (Ag 99.9%), both precious metal.
| Property | Pure Gold (Au 99.99%) | Pure Silver (Ag 99.9%) | Difference |
|---|---|---|---|
| Tensile strength | 130 MPa | 125 MPa | -4% |
| Elongation | 35 % | 40 % | +14% |
| Elastic modulus | 78,000 MPa | 71,000 MPa | -9% |
| Poisson ratio | 0.42 | 0.37 | -12% |
| Density | 19,300 kg/m³ | 10,490 kg/m³ | -46% |
| Thermal conductivity | 314 W/m·K | 428 W/m·K | +36% |
| Specific heat | 130 J/kg·K | 235 J/kg·K | +81% |
| Coefficient of thermal expansion | 0.000014 1/K | 0.00002 1/K | +39% |
| Melting point | 1,063 °C | 962 °C | -10% |
Difference is Pure Silver (Ag 99.9%) relative to Pure Gold (Au 99.99%). 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
- 24K / fine gold
- standard
- CRC Handbook of Chemistry and Physics
- heat treatment
- annealed
- grade
- fine silver
- standard
- ESPI Metals technical data / NBS Circular 412
- heat treatment
- annealed
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