Tantalum has excellent high-temperature resistance. Its melting point is as high as 2980℃. After alloying, it can still maintain good strength and oxidation resistance above 1500℃, far exceeding most metal alloys (such as titanium alloys and aluminum alloys), making it suitable for extreme high-temperature environments.
Tantalum has extremely strong corrosion resistance. At room temperature, it hardly reacts with acids (except hydrofluoric acid and fuming sulfuric acid), alkalis, and salt solutions. Its surface easily forms a dense oxide film (Ta2O5), which prevents the penetration of corrosive media. It has significant advantages in fields such as chemical engineering and Marine engineering.
Good mechanical properties. Tantalum alloys combine high strength and toughness. For example, the tensile strength of Ta-10W alloy can reach more than 700MPa at room temperature, and it is not prone to embrittlement at low temperatures, making it suitable for complex stress environments.
High biocompatibility, the compatibility of tantalum alloy with human tissues is close to that of titanium alloy, and its surface can promote the attachment and growth of bone cells. It is an ideal biomedical material and has been certified by the FDA for use in implant devices.
Tantalum has excellent electrical and thermal properties. It has high electrical and thermal conductivity and maintains stable electrical characteristics even after alloying, making it suitable for electronic components. Meanwhile, its coefficient of thermal expansion is low, which can reduce deformation when there are drastic temperature changes.
High density and processability: The density of tantalum is 16.6g/cm3, which is higher than that of titanium (4.5g/cm3) and steel (7.8g/cm3), making it suitable for scenarios requiring high-density materials (such as counterweights and shielding materials). In addition, tantalum alloys can be processed into various shapes through forging, rolling and other techniques.
