Pure Graphite Crucible Melting Gold Silver Copper Metal 30mm X 30mm

2pcs Graphite Crucible: 1pcs 25 x 25mm & 1pcs 30mm x 30mmFeatures: Well thermal stability : according to the using conditions of graphite crucible snap heat and cold.Well resistance to strong acid, strong alkali.Good heat transfer performance of graphite crucible: for greatly shorten the melting time and save energy.Ash content less than 0.1%, to ensure the precious metals in smelting is not contaminated.Bulk density greater or equal to 1.78 g/cm3; Electric resistivity greater or equal to 9 Ohm; Bending strength greater or equal to 40 Mpa; resist compression greater or equal to 70 Mpa; particle Less than or equal to 43umHas good thermal conductivity and temperature resistance, melting gold, silver, platinumand other precious metals and other alloys with high purity graphite crucible,In high-temperature using process, it got small thermal expansion coefficient.And certain strain resistance to the thermal shock, quenching.Utilization: Graphite crucible is generally used in alloy tool steel smelting and smelting of nonferrous metals and their alloys.Graphite crucible can be used in the processing of graphite, graphite crucible, graphite casting crucible tank,pull rods, mold and other graphite products.Graphite crucible let the products are more durable than ordinary material products,longer service life, able to withstand more than 2000 Degrees Celsius high temperatureUsing TipsStored in dry place, do not get it wetafter drying the crucible, don't make it Press with water.Be careful not to give a mechanical impact force, not from a fall or impact.colour: BlackMaterial: High purity fine particle graphiteSize:30mm x 30mm & 25 x 25mmHole inner diameter: 13mm & 20mmPackage Contents:2 x Graphite CrucibleOnly the above package content, other products are not included.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.