How to Estimate the Weight of Platinum for Casting
How to Estimate the Weight of Platinum for Casting
Platinum Alloy | Specific Gravity | Wax to Metal Ratio |
90 / 10 Iridium | 21.5 | Weight of wax X 21.5 |
95 / 5 Iridium | 21.4 | Weight of wax X 21.4 |
Platinum / Cobalt | 20.8 | Weight of wax X 20.8 |
Platinum / Ruthenium | 20.65 | Weight of wax X 20.65 |
Pt 950 / Heat Treatable | 19.3 | Weight of wax X 19.3 |
Knowing the weight of platinum is important for pricing finished product.
When working with a model material, the following formula should be used to find the weight of platinum required.
When using wax, multiply the weight of wax by the SG of the Pt to obtain the estimated weight. Be sure to allow for the casting button.
Source: Platinum Guild International USA
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