Tantalum Capillary Tube ASTM B521
- High-purity tantalum capillary tube with purity ≥99.95%
- Manufactured to ASTM B521 / ASME SB-521 standard
- UNS R05200 (pure tantalum) with excellent corrosion resistance
- Melting point 2996°C — the fourth-highest among all metals
- Density 16.6 g/cm³ with excellent dimensional stability
- Outstanding corrosion resistance to acids, alkalis, and most chemical media
- Excellent biocompatibility for medical implant and device applications
Description Of Tantalum Capillary Tube ASTM B521
Tantalum Capillary Tube is a small-diameter tubular product manufactured from pure tantalum (UNS R05200) to ASTM B521 standard. Tantalum is a silver-grey refractory metal with a melting point of 2996°C, excellent corrosion resistance, and superior biocompatibility. These capillary tubes are widely used in medical devices, chemical processing equipment, and analytical instruments.
Tantalum offers a unique combination of properties that make it ideal for capillary tube applications. With a melting point of 2996°C (the fourth-highest among all metals, after tungsten, rhenium, and osmium), tantalum capillary tubes can withstand extreme temperatures. The material also offers outstanding corrosion resistance to acids, alkalis, and most chemical media, and it is biocompatible, making it suitable for medical implant and device applications.
Tantalum capillary tubes are available in custom outer diameters, wall thicknesses, and lengths, with surface finishes including bright, pickled, polished, and annealed. Typical applications include medical devices, chemical processing equipment, analytical instruments, and high-temperature sensors.
Applications Of Tantalum Capillary Tube ASTM B521
Medical Devices: Tantalum capillary tubes are used in medical implants, surgical instruments, biopsy needles, and drug delivery systems due to their biocompatibility.
Chemical Processing: Tantalum capillary tubes are used in corrosion-resistant equipment, heat exchangers, and analytical instruments for handling aggressive chemicals.
Analytical Instruments: Tantalum capillary tubes are used in chromatography, mass spectrometry, and other analytical equipment.
Aerospace and Defense: Tantalum capillary tubes are used in high-temperature sensors and electronic devices.
Nuclear Industry: Tantalum's high melting point and corrosion resistance make it suitable for nuclear applications.
High-Temperature Sensors: Tantalum capillary tubes are used as protective sheaths for thermocouples and temperature sensors.
Specifications Of Tantalum Capillary Tube ASTM B521
| Parameter | Specification |
|---|---|
| Material | Tantalum (Ta) |
| UNS Designation | R05200 |
| Standard | ASTM B521 / ASME SB-521 |
| Purity | ≥99.95% |
| Density | 16.6 g/cm³ |
| Melting Point | 2996°C |
| Boiling Point | 5425°C |
| Young's Modulus | 186 GPa |
| Thermal Conductivity | 57.5 W/(m·K) |
| Thermal Expansion | 6.3 µm/(m·K) |
| Outer Diameter (OD) | Customizable |
| Wall Thickness (WT) | Customizable |
| Length | Customizable |
| Surface Finish | Bright, pickled, polished, annealed |
| Product Standard | ASTM B521 / ASME SB-521 |
| Certification | ISO 9001 |