Tantalum and Tantalum Alloys Comparison Table

Comparison of Tantalum and Tantalum Alloys
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Material NameCompositionUNS GradeASTM StandardsDensity (g/cm³)Melting Point (°C)Tensile Strength (MPa)Characteristics & Applications & Comparison
Unalloyed TantalumTantalum (Ta) ≥ 99.95%UNS R05400ASTM B365, ASTM B708, ASTM B521,16.63017280-350Pure Tantalum offers excellent corrosion resistance, high melting point, good electrical conductivity, and thermal stability. It’s ideal for chemical processing, aerospace, high-temperature resistors, and electronics. While it has the best corrosion resistance, its mechanical strength is lower than alloys, making it perfect for highly corrosive environments.
Tantalum-Tungsten AlloyTantalum (Ta) + Tungsten (W)UNS R05255 (90% Ta, 10% W)18.53020500-700Tantalum-tungsten alloys provide enhanced strength, high-temperature stability, and improved wear resistance. Ideal for aerospace, military equipment, and nuclear technology, they outperform pure Tantalum in high-stress, high-temperature applications.
Tantalum (Ta) + Tungsten (W)UNS R05252 (97.5% Ta, 2.5% W)18.53020500-700
Ta5W, Ta20W, Customized/ / / /
Tantalum-Niobium AlloyTantalum (Ta) + Niobium (Nb)UNS R05240 (60% Ta, 40% Nb)16.53017400-550Tantalum-niobium alloys offer excellent oxidation resistance and better thermal stability. Ideal for nuclear reactors, high-temperature chemical processing, and aerospace, they outperform pure Tantalum in extreme high-temperature and corrosive environments.