Graphite Crucible Quartz Melting Crucible Cup Kit Gold Furnace Melt...

Graphite Crucible Quartz Melting Crucible Cup Kit Gold Furnace Melting Cup Graphite Casting Ingot Mold Coin Combo Metal Casting Refining Scrap Bar for Melting Casting Refining Metal Jewelry Gold Feature: Composition: 99.95% Graphite, Ash content less than 0.1%. Excellent thermal conductivity and corrosion resistance. Better for Refining than Silicon Carbide Graphite Crucibles. 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 for Protection Furnace. 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 for time and save energy; Great impact resistance performance to ensure the reliability of product quality. ApplicationUsed for melting and casting metals such as Gold, Silver, Brass, Aluminum, Copper, Zinc, Plumbum, etc Specifications: Material: Pure Graphite Ash 0.1% Bulk density 1.82 g/cm3 (1 troy ounce =31.1035g) Color:Black Shape:A/B(Optional) Size: More detailed,please see photo Quantity:1Pc. Note: Size for manual measurement, there may be a 0 to 3mm error, belongs to the normal phenomenon. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package include: 1x Graphite Casting Melting Ingot.