Tantalum Products | Refractory Metal
Tantalum Strip
Precision-rolled tantalum strip for electronic, chemical, and industrial applications. Available in thicknesses from 0.01mm to 2.0mm and widths from 5mm to 500mm. Our tantalum strip offers excellent surface finish, tight thickness tolerances, and consistent mechanical properties. Primary applications include capacitor manufacturing, chemical equipment gaskets, furnace components, and electronic connectors. Manufactured per ASTM B708 with full quality documentation.
✅ Customized-made is available
About Tantalum Strip
Our tantalum strip is manufactured using precision cold rolling technology with multiple rolling passes and intermediate annealing to achieve exacting thickness tolerances and superior surface quality. Each coil undergoes comprehensive quality inspection including thickness measurement, surface inspection, and mechanical testing.
Features
- Thickness: 0.01mm - 2.0mm
- Width: 5mm - 500mm
- Precision cold-rolled finish
- 99.95%+ purity tantalum
- Tight thickness tolerances
- Excellent surface quality
- ASTM B708 compliant
- Suitable for capacitor applications
- Custom slit widths available
- Coil or cut-to-length delivery
Specifications
| Material | Tantalum (Ta), UNS R05200 |
|---|---|
| Purity | ≥99.95% |
| Thickness | 0.01mm - 2.0mm |
| Width | 5mm - 500mm |
| Thickness Tolerance | ±5% (standard), ±2% (precision) |
| Surface Finish | Cold rolled, bright annealed |
| Tensile Strength | 200-500 MPa |
| Standard | ASTM B708 |
| Edge | Slit, deburred |
| Packaging | Coils or cut lengths |
How Tantalum Strip is Manufactured — Production Process
Our tantalum strip is produced through precision cold rolling of sheet material, achieving tight thickness tolerances, excellent flatness, and consistent mechanical properties across the full strip width and length. The rolling process is optimized for the narrow width format required in electronic and precision manufacturing applications.
Production begins with high-purity tantalum sheet that has been vacuum annealed to achieve a uniform recrystallized grain structure. The sheet is then cold-rolled on precision rolling mills with computer-controlled gap settings to achieve the target strip thickness with tolerances as tight as ±0.005mm. Multiple rolling passes with intermediate stress-relief annealing ensure uniform deformation and prevent edge cracking.
After final rolling, the strip undergoes precision slitting to the required width, edge conditioning to remove burrs, and final vacuum annealing to achieve target mechanical properties. Each coil is tested for thickness uniformity (point micrometer measurements), surface quality (automated optical inspection), tensile properties, and chemical composition.
Applications of Tantalum Strip
Tantalum strip serves critical roles in electronics, capacitor manufacturing, and precision industrial applications:
Tantalum Capacitor Anodes
Tantalum strip is the primary raw material for sintered tantalum capacitor anodes. The strip is cut, formed, and sintered to create porous anode pellets with high capacitance per unit volume. These capacitors are essential in mobile devices, automotive electronics, aerospace systems, and medical devices where reliability and miniaturization are critical.
Electronic Connectors and Lead Frames
Precision tantalum strip is stamped and formed into electronic connectors, lead frames, and contact springs. The material's excellent corrosion resistance and biocompatibility make it suitable for implantable medical device connectors and high-reliability aerospace connectors.
Thin-Film Deposition Sources
Tantalum strip is used as evaporation source material in physical vapor deposition (PVD) processes for thin-film coatings. In optical coating, semiconductor fabrication, and decorative coating applications, the strip provides consistent vapor flux for uniform film deposition.
Chemical Processing Gaskets
Tantalum strip is fabricated into spiral wound gaskets and ring joint gaskets for corrosive chemical processing equipment. These gaskets provide reliable sealing in acid environments where conventional gasket materials fail.
Frequently Asked Questions about Tantalum Strip
Q: What is the thinnest tantalum strip you can produce?
A: We can produce tantalum strip down to 0.01mm (10 microns) thickness with precision rolling and tight tolerances, suitable for capacitor and microelectronic applications.
Q: What widths are available?
A: Standard widths range from 5mm to 500mm. We offer custom slitting services to deliver exact widths with clean, deburred edges.
Q: Is tantalum strip used in capacitor manufacturing?
A: Yes, tantalum strip is a key material for sintered tantalum capacitors. The strip is formed into anode pellets through stamping, sintering, and anodization processes.
Q: What surface finish options are available?
A: We provide cold-rolled bright finish, pickled finish, and polished finish. Standard is cold-rolled with controlled surface roughness for optimal performance.
Q: How is tantalum strip packaged?
A: Standard packaging includes coils on cardboard or metal cores, interleaved with paper, or cut-to-length sheets stacked with protective paper between layers.
