Salamander Brand Is A High Quality Ceramic Bonded Clay Graphite Crucible Manufactured By Plastic Forming Techniques. * Quality Salamander Super Crucibles Are Manufactured From Premium Grade Raw Materials Under An ISO 9001:2000 Quality Management System. * Applications : Salamander Super Crucibles Are Used To Provide Consistent Performance In Fuel-Fired Furnaces And Medium / High Frequency Induction Furnaces, The Smaller Sizes Are Typically Used To Melt Precious Metals, While Larger Sizes Can Be Used For Some Ferrous Alloys Such As Grey Iron As Well As To Melt Non-Ferrous Alloys. * Identification Salamander Super Crucibles Are Colored Black Except For Certain Smaller Sizes That Are Supplied Unpainted. * For more details please check product description.