Tantalum Foil and Tantalum Strip (Thin or small thickness)
Princeton Powder is a main supplier of thin tantalum foil in the United States, offering materials that meet ASTM B365 standards. We provide tantalum strip in a variety of thickness according to customer’s request. Our manufacturing processes include hot or cold rolling. Tantalum Strip and Tantalum Foil are for sale at a competitive price.
Material | Tantalum Foil, Tantalum Strip |
CAS Number | 7440-25-7 |
Standard | ASTM B365, ASTM F560 (Medical Grade) |
Grade | R05200, R05400, R05252 (Ta2.5W), R05255 (Ta10W), R05240 (Ta40Nb) |
| Density | 16.65 g/cm3 |
Melting Point | 3020 ℃ |
Dimensions | Customized |
Form | Electronics Grade Tantalum Foil Medical Grade Tantalum Foil |
Surface Treatment | Pickling or Polishing |
Description of Ta Foil/Strip (Electronics Grade and Medical Grade)
Tantalum foil is made from the chemical element tantalum (Ta), a dense, blue-gray metal with atomic number 73. Tantalum is known for its exceptional corrosion resistance, high melting point (approximately 3,000°C), and biocompatibility. It is widely used in the electronics industry for manufacturing capacitors, where its conductive properties are essential. Due to its biocompatibility, tantalum wire is also utilized in medical applications, including implants and surgical devices. Its unique properties make it suitable for various demanding environments, such as chemical processing and aerospace.
Chemical Compositions of Pure Tantalum and Ta alloy Foil/Strip
Grade | Chemical Composition (≤%） | |||||||||||
Ta | Fe | Si | Ni | W | Mo | Ti | Nb | O | C | H | N | |
Ta1 | Bal. | 0.005 | 0.005 | 0.002 | 0.01 | 0.01 | 0.002 | 0.03 | 0.015 | 0.01 | 0.0015 | 0.01 |
Ta2 | Bal. | 0.03 | 0.02 | 0.005 | 0.04 | 0.03 | 0.005 | 0.1 | 0.02 | 0.01 | 0.0015 | 0.01 |
TaNb3 | Bal. | 0.03 | 0.03 | 0.005 | 0.04 | 0.03 | 0.005 | <3.5 | 0.02 | 0.01 | 0.0015 | 0.01 |
TaNb20 | Bal. | 0.03 | 0.03 | 0.005 | 0.04 | 0.03 | 0.005 | 17.0-23.0 | 0.02 | 0.01 | 0.0015 | 0.01 |
Ta2.5W | Bal. | 0.005 | 0.005 | 0.002 | 3.0 | 0.01 | 0.002 | 0.04 | 0.015 | 0.01 | 0.0015 | 0.01 |
Ta10W | Bal. | 0.005 | 0.005 | 0.002 | 11 | 0.01 | 0.002 | 0.04 | 0.015 | 0.01 | 0.0015 | 0.01 |
Physical Properties of Tantalum Foil and Strip
| Product condition | Tensile strength (MPa) | Elongation, % |
| Annealed | 300～600 | 10～30 |
| Half annealed | >600～1000 | <5 |
Unannealed | >1000 | <5 |
Application
Electronics: Tantalum foil is widely used in capacitors and connectors due to its excellent electrical conductivity and stability under high temperatures.
Medical Devices: The biocompatibility and corrosion resistance of tantalum make it ideal for use in surgical instruments, implants, and prosthetics.
Chemical Processing: Tantalum foil is employed as linings in reactors, piping systems, and other components that handle highly corrosive substances, ensuring durability and safety.
Aerospace: Used in various high-performance applications, including components for jet engines and spacecraft, where resistance to extreme temperatures and harsh environments is critical.