Clay Graphite Crucible for melting metal , silver, gold, copper, aluminum5KG ,Rated to withstand temperatures up to 1560°F - 2912° F (850°C - 1600°C)This crucible has strong corrosion resistance to acid and alkaline solution, and has excellent chemical stability and thermal shock resistance.Perfect for use with propane melting furnacesColour: blackMaterial: graphitePackage Contents:1 * Graphite CruciblesOnly 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.