Are you looking for a metal that is highly corrosion-resistant in an aggressive environment? Then tantalum is an excellent option. Tantalum is a shiny gray metal and is usually sourced from tantalum, which contains copper, tin ores and slags (tantalite or coltan). Although tantalum is not a precious metal, it does have a similar chemical resistance.
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- Fairly expensive metal
- High corrosion resistance
- Excellent resistance to acids
- Very high melting point (only tungsten and rhenium have higher melting points)
- Easy to process at a low temperature
- Very tough, excellent weldability, and relatively easy to process
- Very good biocompatibility
- Sputtering targets
- Client-specific parts by special design
Applications of tantalum
The very pure alloys made with tantalum are often used for chemical installation machineries such as pipes and heat exchangers, medical implants, surgical instruments, and in high-temperature ovens for thermal conductors. Additionally, part of the tantalum produced is used for electronic capacitors, crucibles, and as an alloy element in the steel industry.
The branches that use metals
Tantalum is inert, which means that the human body reacts to it as being endogenous and will not reject the material. This is why tantalum is often used in the medical industry.
ASTM standards of tantalum
The ASTM standard describes how something must be made.
- ASTM B364 (and Ta-Ta-alloys – ingots, blocks)
- ASTM B365 (and Ta-Ta-alloys – rods, wires)
- ASTM B708 (Ta and Ta-alloys – sheet, strip)
- ASTM B521 (Ta-Ta alloys and tubes, welded and seamless)
- ASTM F560 (pure tantalum – Medical applications)