Quality material: our graphite casting ingot mold is mainly made of graphite, hardly ash content ensures that the metal purity will not be affected during the metal refining process; Fast cold and hot conditions, with good thermal stability, exquisite refining effectIngot mold dimension: capacity: 5-6 ml, outside dimension: 88 x 47 x 8 mm (3.45 x 1.85 x 0.31 inch), inner dimension: 63 x 38 x 4 mm (2.48 x 1.5 x 0.16 inch), suitable for melting and casting metals such as gold, silver, brass, aluminum, copper, zinc, plumbum, etc.Exquisite performance: the mold has nice thermal stability for fast heating and cooling, well corrosion resistance to strong and alkali, good thermal conductivity properties which highly shorten the melting time and save energy, exquisite impact resistance performance to ensure the reliability of product qualityWide uses: our graphite ingot mold can be widely applied for smelting of gold and silver or other metals, test analysis tools and ingot mould for making bars or necklace pendant charmsWhat you get: the package comes with 1 piece of graphite ingot mold with exquisite craftsmanship and versatile usages, which can meet your daily needs, can meet you making bars or necklace pendant charms Feature: Versatile usages: Our graphite ingot mold can be widely applied for smelting of gold and silver or other metals, test analysis tools and ingot mould for making bars or necklace pendant charms. Durable material: Our graphite casting ingot mold is mainly made of graphite, hardly ash content ensures that the metal purity will not be affected during the metal refining process. Fast cold and hot conditions, with good thermal stability, exquisite refining effect. Specifications: Size: as the picture shows Color: as the picture shows Material: graphite Package includes: 1 x Graphite ingot mold Note: Manual measurement, please allow slight errors on size. The colors may exist slight difference due to different screens. Pure graphite crucible can not be heated by carbon furnace or charcoal kiln. It will be oxidized and broken. Pure graphite will start to oxidize at 752 degrees Fahrenheit/ 400 degrees Celsius. The withstand temperatures can be 3200 degrees Fahrenheit if you use air electric furnace. The withstand temperatures can be 5000 degrees Fahrenheit if you use vacuum or gas protection furnace.