1. Tantalum Bar, Tantalum Rod, Tantalum Tube 2. Tatalum Bar Standard Spec ASTM B365 3. Pure Tantalum, Ta-2.5W, Ta-10W 4. SGS Physical PropertiesTantalumAtomic Number180.95Density16.6 g/ccMelting Point3290 K, 2996°C, 5462°FBoiling Point5731 K, 6100°C, 9856°FCoefficient of Thermal Expansion (20°C)6.5 x 10(-6) / °CElectrical Resistivity (20°C)13.5 microhms-cmElectrical Conductivity13% IACSSpecific ...