Tantalum metal is known as Jack of all trades in “Metal Kingdom”.
Tantalum is very hard, the hardness can reach 6 to 6.5. Its melting point reach 2996 DEG C, next to tungsten and rhenium. Tantalum is full of ductility and can be pull into filaments or made of thin foil. The thermal expansion coefficient is very small. In addition, its toughness is very strong and is more excellent than copper.
Tantalum also has excellent chemical properties, such as high corrosion resistance. Experiments indicate that at room temperature, tantalum does not react in alkali solution, chlorine, bromine water, dilute sulfuric acid and many other chemicals,it only has reflects in hydrofluoric acid and hot sulfuric acid. This situation is relatively rare in metal. These characteristics make tantalum metal application be very broad. Tantalum can replace stainless steel in equipment to make all kinds of inorganic acid. And the equipment life span can be improved several times more than that of stainless steel. In addition, tantalum can replace the precious metal platinum in the chemical, electronic, electrical industries, which will greatly reduce the required cost.
