Description:300mm Graphite Carbon Stirring Rod with Borax Crucible Glazing Stir Melt Gold Silver SetSpecification:          Material       Graphite rod、 Borax           Graphite rod Length       30cm           Graphite rod Diameter       0.8cm           Borax weight       30g           Package Weight:       63g           Graphite rod Physical indicators                   Density       1.65g \/ cm!#!amp!*!sup3;           Particle size       0.8mm           Compressive strength       30MPa           Flexural strength       13.5MPa           Ash        0.3%           Resistivity       9!#!amp!*!mu;!#!amp!*!Omega;m           Thermal expansion coefficient       2.5 (X10-6 \/ \u2103)        Features: *Graphite rod:Lubricity、 high temperature、 anti-oxidation、 acid and alkali resistance、 thermal shock resistance、 good electrical conductivity. *Great for Jewelers、 Metalsmiths、 Refiners. *Borax can be used for welding metal、Works with Gold、 Brass、 Silver、 Copper、 Aluminum、 etc. *Rod is used for stirring and mixing the molten metal in order to get a good homogenous mix of the alloys in Gold、 Silver、 Brass metals. *Graphite rod is also used to remove any impurities on the surface of the molten metal. *Borax can be removed the attaching to the metal surface oxide.  Package Included: 1 x Graphite rod 1 x Borax  More Details: