Graphite Crucible High Temperature Resistance Precious Gold Sliver Metal Melting Furnace Accessories Smelting Furnace Crucibles Jewlery Casting Tools Capacity (1kg), Each

Details:

Size: 1kg. 1Kg graphite crucible diameter: 65mm ; height: 125mm, warm tips: pure graphite crucibles cannot be heated in coal or carbon furnaces. This jewelry making tools will rust and break; pure graphite will begin to oxidize at 752 °f (400 °c). If an air heater is used, the temperature can withstand temperatures up to 3200 °f.