650G Gold Melting Graphite Ingot Mold Metal Casting Mold Melting Crucible Furnace

99.95% Graphite Ash content less than 0.1%. Excellent thermal conductivity and corrosion resistance. Better for Refining than Silicon Carbide Graphite Crucibles. [Perfect Performance] Excellent thermal stability for fast heating and cooling; Well corrosion resistance to strong acid and alkali; Good thermal conductivity properties which highly shorten the melting time and save energy; Great impact resistance performance to ensure the reliability of product quality. [Application]Used for melting and casting metals. such as Gold Silver Brass Aluminum Copper Zinc Plumbum etc Specifications: Ash less than or equal to 0.1% Bulk density greater or equal to 1.82 g/cm3 (1 troy ounce =31.1035g) Outer size:100 x 30 x 30mm/ 4 x 1.2 x 1.2 inch Inner size: 90 x 20 x 20mm/ 3.5 x 0.8 x 0.8inch (1.18 fl oz) Capacity: 650g gold / 300g silver Colour: Black Material: graphite Package Contents: 1 x Graphite Casting Melting Ingot [Warm-Tips] Pure graphite crucible can NOT be heating by carbon furnace or charcoal kiln. It will be oxidized and cracked; Pure graphite will start to oxidize at 752 °F (400℃). The withstand temperatures can be 3200 °F if you use Air Electric Furnace. The withstand temperatures can be 5000 °F if you use Vacuum or Gas Protection Furnace. Only the above package content other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.