High density, corrosion resistance, high temperature, heat and fast, high thermal shock resistance, attractive appearance. melting various metal like gold, silver, copper, aluminum, lead, zinc,brass and other nonferrous metals. Features : graphite crucible is generally used in alloy melting and melting of nonferrous metals and their alloys. using tips: store in dry place, do not get it wet. After drying the crucible, don't make it touch with water. Be careful not to give a mechanical impact force, not from a fall or impact.