Silver Graphite Ingot Mold Crucible for Melting Casting Refining Scrap Precious Metal Jewelry, High Purity Refining Graphite, Melting Casting Mould for Gold Silver Aluminum Copper Brass Zinc

High Purity Refining Graphite Crucible Ingot Mold Excellent thermal stability, corrosion resistance, and thermal conductivity properties Material: Pure Graphite

• Package 1x Graphite Casting Melting Ingot. Composition: 99.95% Graphite. Ash content less than 0.1%. Excellent thermal conductivity and corrosion resistance. Better for Refining than Silicon Carbide Graphite Crucibles.
• 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.
• 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. Application Melting and casting metals such as Gold, Silver, Brass, Aluminum, Copper, Zinc, Plumbum, etc.
• External size:57x42x11mm Internal dimensions:7.9x20.6x4.1mm/10.5x29.5x4.1mm/13x35.8x4.1mm; Capacity:Gold 12g,24g,36g; Capacity:Silver 6g,12g,18g