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Tantalum
The tantalum target is a blue gray transition metal and a high melting point metal (melting point 2996 ℃). Tantalum is a chemical element with the chemical symbol Ta and atomic number 73.
Properties: Tantalum is ductile, hard, and resistant to corrosion. Tantalum does not react with aqua regia, and is used for manufacturing chemical equipment, vacuum tubes, medical devices, and implants.