Quality materials our casting ingot crucible molds are mainly made of graphite material, almost no ash content so that the metal refining process does not affect the purity of the metal, which are durable, sturdy, reliable and reusable, not easy to break or deform, you can use them for a long timeSize detail the outer dimension of our silver gold ingot mold is approx. 1005025mm 3.941.970.98 inches and the inner size is approx. 904020mm 3.541.570.79 inch, and the capacity is about 1kg gold or 500g silver, suitable size can meet your daily needsGood performance our ingot crucible mold has good thermal conductivity, which can significantly shorten the melting time and save energy, and can withstand a temperature of 2000 degrees Celsius, good acid and impact resistance, good alkali and corrosion resistance, 89 MPA compressive strength and 48.7 MPa fleVarious applications this graphite casting mold has a wide range of uses, it is suitable for eperiment and melting of nonferrous metals, such as gold, silver, metal, aluminum, copper, brass, zinc and so on, and it can also be used for eperiment analysis after the graphite crucibles are melted into nonferrous metals, as ingot mold and other purposesColor blackMaterial graphitePackage contents1 setcrucibles for melting metalOnly the above package contents, other products are not included.Note Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowable measurement error is13 cm.