... sheet, tube, wire ,rod ,crucible , target ,alloy and so on in conformity with ASTM. Tantalum features high melting point ... , good cold processability ,excellent chemical stability , good resistance to corrosion , high dielectric constant ,in surface oxide film .widely ... aerospace and aviation.For more details please go to our website, and welcome to China to visit our company.Tantalum bar Tantalum- ...