The melting point of tantalum metal is 2996℃ and the density is 16.6g/cm³. Tantalum is widely used in electronics, semiconductors, chemicals, machinery, aerospace, medical, military and other industries due to its high temperature resistance, corrosion resistance, cold processing and good welding performance.

The deep sea environment is extremely harsh. The seawater is rich in salt, dissolved oxygen and various minerals, and is highly corrosive. A dense, highly adhesive oxide film can form on the surface of titanium alloy, which can effectively prevent seawater from corroding the inside of the material.