... pressure , 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- tungsten ... -98Purity: ≥99.95% or 99.99% Special requirements to be agreed on by the supplier and buyer of negotiation. ...