melting platinum

The purpose of the application test was melting platinum, and to determine what quantities will melt effectively in the UltraMelt 5P. Due to its properties and high melting temperature, platinum is a challenging metal to melt. The UltraMelt 5P is the ideal equipment for this task.

UltraMelt 5P

• Scrap platinum
• Crucible for melting
• A lid for the crucible
• Tongs
• Pipettes (for taking a sample in video 2)

Test 1:
Melting Platinum – 250g of Scrap

Key Parameters
Temperature: over 3200°F (1768°C)
Power: 3.9 – 4.8 kW (power varied during the melting process)
Time: 4 minutes, 35 seconds

Test 2:
Melting Platinum – 250g of solid
Key Parameters
Temperature: over 3200°F (1768°C)
Power: 3.1 – 4 kW (power varied during the melting process)
Time: 4 minutes, 10 seconds


  1. Platinum was added to the ceramic crucible.
  2. UltraMelt 5P was turned on.
  3. The engineer tapped lightly on the crucible to settle the material, and help the heat distribute throughout the material. The tapping also helped to loosen pieces of the scrap platinum to drop into the molten platinum.
  4. A cap or lid was placed on the crucible to minimize heat loss. In this case, another crucible was used as the cap.
  5. As power was applied, the platinum began to melt and flow to the bottom of the crucible.
  6. There were some small differences in the process between test 1 and test 2, as noted in the videos.
    • For Test 1, with the Scrap Platinum, after 2 minutes 37 seconds of heating, the platinum is molten at the bottom of the crucible; After 4 minutes 35 seconds of operation, the platinum is completely molten, and the UltraMelt 5P is turned off.
    • For Test 2, with the solid piece of platinum, after 4 minutes 10 seconds of operation, the platinum was completely molten. A pipette was lowered into the molten platinum to take a sample. The UltraMelt 5P was turned off.
  7. Since we did not have a mold to pour the molten platinum into, we cooled the platinum in the crucible. The crucible was turned upside down during cooling, to allow the platinum to eventually fall out of the crucible.


Different quantities of platinum were tested in increments of 50g, from 50g to 250g. The tests results indicated that successful platinum melting was optimized at approximately 250g.



Video 1

Video 2

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