Pure Graphite Crucible Cup Propane Torch Melting Gold Silver Copper Metal<br> Well thermal stability : according to the using conditions of graphite crucible snap heat and cold.<br> Well corrosion , impact performance, to the reliability of product quality; Well to strong acid, strong alkali.<br> Good heat transfer performance of graphite crucible: for greatly shorten the melting time and save energy.<br> Ash content less than 0.1% , to the precious metals in smelting is not contaminated.<br> In high-temperature using process, it got small thermal expansion coefficient; And certain strain to the thermal shock, quenching; Long service life.<br> Color: Black<br> Size: 40*30mm<br> Hole diameter: 20mm<br> Material: graphite<br> Bulk density greater than equal 1.78 g/cm3<br> Electric resistivity greater than equal 9 Ohm m<br> Bending strength greater than equal 40 Mpa<br> resist compression greater than equal 70 Mpa<br> particle less than equal 43um<br> Has good thermal conductivity and temperature , melting gold, silver,<br> and other precious metals and other alloys with high purity graphite crucible,<br> product high temperature , anti-oxidation corrosion and long service life.<br> Utilization:<br> Graphite crucible is generally used in alloy tool steel smelting and smelting of nonferrous metals and their alloys.<br> Graphite crucible can be used in the processing of graphite, graphite crucible, graphite casting crucible tank,pull rods, mold and other graphite products.<br> Graphite crucible let the products are more durable than ordinary material products,longer service life, able to withstand more than 2000 Celsius high temperature<br> Using Tips:<br> Stored in dry place, do not get it wet<br> after drying the crucible , don't make it touch with water.<br> Be careful not to give a mechanical impact force, not from a fall or impact.<br> Package Included:<br> 1 x Pure Graphite Crucible Cup<br> Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin