Features Made of high density squeezing graphite rod Good lubricity, high temperature resistance, oxidation resistance Acid and alkali resistance, strong thermal shock resistance Good electrical conductivity, high mechanical strength Used for metallurgy, machinery, electronics, chemical industry, light industry,etc Description:High-purity graphite has high temperature, corrosion, oxidation resistance, thermal shock resistance, electrical conductivity. It is ideal material for spot welding machine, carbon rod machine, butt welding machine. Features:Made of high density squeezing graphite rod.Good lubricity, high temperature resistance, oxidation resistance.Acid and alkali resistance, strong thermal shock resistance.Good electrical conductivity, high mechanical strength.Used for metallurgy, machinery, electronics, chemical industry, light industry,etc. Specifications:Material: GraphitePurity: 99.9 percent Diameter: 10mm or 0.39" Length: 100mm or 3.93" Color: Black Quantity: 5Weight: 64g(approx.)Density: 1.65g or cm3 Granularity: 0.8 mm Compression Resistance: 30MPa Fracture Resistance: 13.5MPa Ash: 0.3 percent , Resistivity: 9μΩmThermal Expansion Coefficient: 2.5(X10-6 or ℃) Package Includes: 5 x Graphite Rods Note: Please allow 1-3mm error due to manual measurement. Thanks for your understanding. Package List 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.