Graphite Ingot Mold, 60ml Capacity Crucible Mould, 2Packs Metal Casting Molds for Casting Melting Refining Gold Silver Aluminum Copper Brass Zinc Plumbum and Alloy (4\x2\x1\-1000g Gold; 540g Silver)
- ... molds can be applied for experiments and smelting of non-ferrous metals, such as gold, silver, copper, aluminum, lead and more. The ingot molds can also work as graphite crucible for melting into non-ferrous metals, test analysis, or other purposes..
- [WARM TIPS] - Pure graphite crucible can NOT be heating by carbon furnace or charcoal kiln. If so, the metal casting molds will soon be oxidized and cracked. Pure graphite will start to oxidize at 752 °F (400 ℃). The withstand temperatures of graphite crucible can be 3200 °F in Air Electric Furnace and 5000 °F in Vacuum or Gas Protection Furnace..