14K Yellow Gold (Au-Cu-Ag-Zn) vs Pure Platinum (Pt 99.95%)
Property comparison of 14K Yellow Gold (Au-Cu-Ag-Zn) and Pure Platinum (Pt 99.95%), both precious metal.
| Property | 14K Yellow Gold (Au-Cu-Ag-Zn) | Pure Platinum (Pt 99.95%) | Difference |
|---|---|---|---|
| Tensile strength | 350 MPa | 145 MPa | -59% |
| Elongation | 25 % | 35 % | +40% |
| Elastic modulus | 68,000 MPa | 170,000 MPa | +150% |
| Density | 13,000 kg/m³ | 21,450 kg/m³ | +65% |
| Brinell hardness | 130 HB | 60 HB | -54% |
| Thermal conductivity | 200 W/m·K | 72 W/m·K | -64% |
| Specific heat | 150 J/kg·K | 132 J/kg·K | -12% |
| Coefficient of thermal expansion | 0.000016 1/K | 0.000009 1/K | -44% |
| Melting point | 880 °C | 1,769 °C | +101% |
Difference is Pure Platinum (Pt 99.95%) relative to 14K Yellow Gold (Au-Cu-Ag-Zn). 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
- 14K yellow
- standard
- Smithells Metals Reference Book 8th Ed.
- heat treatment
- annealed
- grade
- commercially pure
- standard
- ESPI Metals technical data / Johnson Matthey PMR 1966
- heat treatment
- annealed 700C
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