Graphite Foundry Crucible for Melting Gold Silver Copper Brass Aluminum 6kg por | Jul 19, 2026Rated to withstand temperatures up to1560°F – 2912°F – (850°C – 1600°C). Not for use in a Coal Foundry. Custom size crucibles are also available upon request! Clay Graphite Foundry Crucible, #3- 6kg.