Baoji Fairy Titanium Industry Co., Ltd. is one of the leading manufacturers and suppliers of tantalum capillary tube micro tube in China. Welcome to wholesale bulk high quality customized products made in China here from our factory. Good service and low price are available.
Products Description Tel：400-010-0000
Features:
Tantalum capillary tube has excellent heat resistance and corrosion resistance. It can work stably and reliably in many harsh environments, such as high temperatures and high pressure. At the same time, it also has good electrical insulation, good weldability, and excellent mechanical properties.
The tantalum tube has excellent physical, chemical, and mechanical properties, stable performance, and strong anti-corrosion abilities, especially for withstanding high temperatures and pressure. It also offers high wear resistance, low thermal expansion coefficient, and inertness to most chemical agents.
Specification Tel：0917-3664600
| Grade | R05200, R05400 (pure tantalum), R05252 (Ta-2.5W), R05255 (Ta-10W) |
| Size | Φ0.2 ～ Φ8 mm WT：0.015 ～ 0.5 mm |
| Standards |
ASTM B521 |
Manufacturing Process: Tantalum capillary tubes are typically seamless tubes, formed through processes such as extrusion and drawing to ensure uniform material properties.
Supply Condition: Generally annealed (M) to eliminate processing stress and achieve good plasticity; it can also be in the hardened (Y) state.
Surface Quality: High-quality capillary tubes should exhibit a uniform metallic luster on both the inner and outer surfaces, free from defects such as oxidation, scratches, and burrs.
products pictures Tel：0917-3664600
Mechanical Properties (Annealed Condition) Tel：0917-3664600
Tantalum capillary tubes in the annealed condition exhibit good ductility. According to ASTM B521, typical mechanical properties are as follows:
| Grade | Tensile Strength (≥ MPa) | Yield Strength (≥ MPa) | Elongation (≥ %) |
|---|---|---|---|
| R05200 / R05400 (Pure Ta) | 207 | 138 | 25 |
| R05252 (Ta-2.5W) | 276 | 193 | 20 |
| R05255 (Ta-10W) | 481 | 414 | 15 |
Core Characteristics Overview of tantalum capillary tube Tel：0917-3664600
| Characteristic Dimension | Specific Parameters/Performance | Detailed Description |
|---|---|---|
| Physical Properties | High Melting Point: Approx. 2996-3017°C High Density: Approx. 16.6-16.7 g/cm³ Good Ductility: Can be processed into fine dimensions |
Among the highest of refractory metals, ensuring high-temperature stability. Feels heavy and dense. Can be rolled or drawn into extremely fine capillary tubes, with wall thicknesses as low as 0.015mm. |
| Chemical Properties | Extremely High Corrosion Resistance: Exhibits excellent resistance to most acids (e.g., nitric, hydrochloric, sulfuric) and even aqua regia. | Its corrosion resistance is comparable to glass. At moderate temperatures (around 150°C), only hydrofluoric acid, fuming sulfuric acid, and strong alkalis affect it. |
| Mechanical Properties | Moderate Strength and Hardness: In annealed condition, tensile strength ≥ 207 MPa, yield strength ≥ 138 MPa. | Strength can be significantly increased through alloying (e.g., adding tungsten). For example, the Ta-10W alloy has a tensile strength exceeding 481 MPa. |
| Processing Characteristics | Special Processing Requirements: Cannot undergo conventional hot working; heat treatment must be performed in a high vacuum. | Tantalum readily reacts with gases like oxygen and nitrogen above 300°C, becoming brittle. Therefore, forming relies mainly on cold working, and surface cleanliness is critical. |
| High-Precision Potential | High Dimensional Accuracy: Can achieve extremely high tolerance grades. | For example, outer diameter tolerances can reach ±0.003mm, and wall thickness tolerances can reach ±0.005mm, meeting the needs of precision instruments. |
Main Application Areas Tel：0917-3664600
The unique properties of tantalum capillary tubes make them an indispensable material in several high-tech fields:
Chemical and Anti-Corrosion Industry: This is the most classic application scenario for tantalum capillary tubes. They are used to manufacture critical components such as corrosion-resistant guide tubes, electrode tubes, heat exchangers, condensers, and reaction vessels. In harsh environments handling strong acids (like nitric, sulfuric, and hydrochloric acid) and their mixtures, tantalum capillary tubes ensure long-term stable operation, preventing equipment failure and product contamination caused by corrosion.
Medical and Health Field: Tantalum has excellent biocompatibility, bonding well with human tissue without rejection, earning it the reputation of being a "biophilic metal." Therefore, tantalum capillary tubes are widely used in medical implants. A classic example is their use as artificial blood vessels. Additionally, they can be used to manufacture nerve repair patches, packaging components for implantable medical devices, and precision needles.
Aerospace and Defense Industry: Leveraging its high-temperature resistance and thermal shock resistance, tantalum capillary tubes are used in the aerospace sector for manufacturing protective sheaths for high-temperature sensors, heat exchange elements, etc. In the defense industry, they are even applied in thermal control or measurement and control components of missile warheads.
Electronics and Precision Instruments: In the fields of semiconductor manufacturing, superconductivity technology, and analytical instrumentation, tantalum capillary tubes can serve as optical fiber ferrules, components in high-temperature vacuum furnaces, thermocouple protection tubes, and fluid transmission lines for precision instruments. Their high purity and stability are crucial for ensuring process environment cleanliness and measurement accuracy.
Atomic Energy and Superconductivity Technology: Tantalum and its alloys have good corrosion resistance to liquid metals (such as nuclear reactor coolants), so they are also used in the atomic energy industry. Meanwhile, tantalum is also a component of some superconducting materials, finding applications in cutting-edge scientific research fields.
Packing And Shipping Tel：0917-3664600
Inner layer protection: Cover with plastic bags or films to prevent direct contact and friction between pipes, and avoid surface scratches.
Outer layer reinforcement: packed with wooden cases padded with foam diaphragms to provide sufficient structural strength to prevent pipe deformation due to extrusion or impact during transportation.
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Shipping by air or sea
FAQ
Q: 1. What changes occur to the tantalum capillary tube at high temperatures?
A: They are stable in a vacuum or inert gas environment. However, they begin to oxidize in air above 300°C, forming a brittle oxide film. Therefore, high-temperature applications and heat treatments must be performed under a vacuum or protective atmosphere.
Q: 2. What are some common tantalum capillary grades?
A: American Standard grades: R05200 / R05400 (pure tantalum), R05252 (Ta-2.5W), R05255 (Ta-10W).
Similar grades in Chinese National Standard: Ta1, Ta2, Ta2.5W, Ta10W.
Q: 3. How are tantalum capillary tubes manufactured?
A: They are typically produced using seamless tube manufacturing processes. The main steps include: tantalum billet → extrusion → multiple cold rolling or cold drawing → intermediate vacuum annealing → finishing → finished product. Precise control of the processing rate and annealing process is required to obtain extremely fine dimensions.
Q: 4. How are tantalum capillaries specifically used in the chemical industry?
A: Mainly used in the manufacture of corrosion-resistant flow guides, heat exchanger tubes, condenser tubes, and reactor linings, for transporting or handling highly corrosive media, ensuring long equipment life and media purity.
Q: 5. What role do tantalum capillaries play in precision instruments?
A: Common applications include:
Thermocouple protection tubing: Protecting thermocouples in high-temperature corrosive environments.
Fiber optic sheathing: Providing mechanical protection and environmental isolation.
Microfluidic delivery lines: Used in analytical instruments, chromatographs, etc.
Q: 6. How to select the appropriate tantalum capillary tube based on the application?
A: General corrosion resistance: Pure tantalum (R05200/Ta1) can meet most chemical requirements.
For higher strength requirements: Tantalum-tungsten alloys (Ta-2.5W, Ta-10W) are available, especially suitable for high-temperature or pressure-bearing applications.
Medical implants: Higher requirements for purity, surface quality, and biocompatibility certification.
Precision instruments: Focus on dimensional tolerances (outer diameter, wall thickness, straightness) and surface finish.
Contact Us
No.11th Road of Gaoxin, Baoji, Shaanxi, P.R.China
Tel: +86-0917- 3664600
Fax: +86-0917- 3664600
WhatsApp: +8618791798690
Mail: sales@tmsalloy.com
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