Hardness of Common Platinum Alloys
Platinum alloys are known for their exceptional hardness and durability. The hardness of platinum alloys is influenced by factors such as the specific composition of the alloy and the manufacturing process used.
The following table provides a list of Vicers hardness values for common platinum alloys taken at room temperature (approximately 20°C or 68°F)..
| 95Pt-5Au | 95 |
| 95Pt-5Ir | 90 |
| 90Pt-10Ir | 130 |
| 85Pt-15Ir | 160 |
| 80Pt-20Ir | 190 |
| 75Pt-25Ir | 250 |
| 70Pt-30Ir | 280 |
| 95Pt-5Ni | 131 |
| 90Pt-10Ni | 204 |
| 85Pt-15Ni | 263 |
| 80Pt-20Ni | 290 |
| 80Pt-20Pd | 95 |
| 60Pt-40Pd | 105 |
| 95Pt-5Rh | 70 |
| 90Pt-10Rh | 90 - 95 |
| 80Pt-20Rh | 120 |
| 70Pt-30Rh | 132 |
| 60Pt-40Rh | 150 |
| 95Pt-5Ru | 131 |
| 90Pt-10Ru | 194 |
| 86Pt-14Ru | 240 |
| 98Pt-2W | 100 |
| 96Pt-4W | 133 |
| 94Pt-6W | 158 |
| 92Pt-8W | 180 |
Related Tables
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Materials Science and Engineering Handbook. United States: CRC Press, 2000. 6) Metals Handbook Desk Edition 2nd Edition by J. R. Davis, ASM International Handbook Committee.