widely used for steel, ceramics, electronics, nuclear energy industries and superconductor technology. 1. Grade: Nb1,Nb22. Purity :> =99.95%3. Characteristic:Melting Point: 2468°CBoiling Point :4742°CDensity: 8.57g/m3High quality, workability4. Certificate: ISO90025. Product Feature: High melting point, High-density, high temperature oxidation resistance, long service life, resistance to ...