Cell Lab 3N5 (99.95%) Tantalum (Ta) Pellets – high-purity refractory metal for vacuum evaporation, semiconductor coating, and optical applications. Excellent E-Beam stability, corrosion resistance, and customisable pellet sizes.
Cell Lab 3N5 (99.95%) Tantalum (Ta) Pellets – high-purity refractory metal for vacuum evaporation, semiconductor coating, and optical applications. Excellent E-Beam stability, corrosion resistance, and customisable pellet sizes.

Cell Lab 3N5 (99.95%) Tantalum (Ta) Pellets Evaporation Materials

Cell Lab 3N5 (99.95%) Tantalum (Ta) Pellets Evaporation Materials High-Purity Refractory Metal for Thin-Film and Vacuum Coating Applications General Description Cell Lab 3N5 (99.95%) Tantalum (Ta) Pellets are designed for thermal and e-beam evaporation in thin-film deposition, semiconductor fabrication, and optical...
Vendor: Cell Lab
SKU: ST0039
Product type: Evaporation Materials
£129.00
£129.00
Size: 1/4" Dia. x 1/4" L
Weight: 50g
Subtotal: £129.00
Description
Description
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Cell Lab 3N5 (99.95%) Tantalum (Ta) Pellets Evaporation Materials

High-Purity Refractory Metal for Thin-Film and Vacuum Coating Applications

General Description

Cell Lab 3N5 (99.95%) Tantalum (Ta) Pellets are designed for thermal and e-beam evaporation in thin-film deposition, semiconductor fabrication, and optical coating industries. As a rare and highly corrosion-resistant refractory metal, Tantalum exhibits exceptional mechanical stability, high melting point (3 017 °C), and excellent electrical conductivity, making it a preferred choice for electronic devices, x-ray optics, and superconducting films.

Its high purity ensures clean deposition and consistent film uniformity under high vacuum. These pellets are fully compatible with graphite crucible liners, enabling smooth evaporation with minimal contamination.

Key Features

  • 99.95% Ultra-High Purity – Guarantees stable, contamination-free film quality.

  • Superior Corrosion Resistance – Ideal for harsh chemical and vacuum environments.

  • High-Temperature Stability – Maintains structure and conductivity up to 3 000 °C.

  • E-Beam and Thermal Compatible – Excellent evaporation performance for precision coatings.

  • Customisable Geometry – Available in multiple diameters, lengths, and weights.

Technical Specifications

Parameter Specification
Name Tantalum
Chemical Formula Ta
CAS Number 7440-25-7
Atomic Number 73
Molecular Weight 180.95 g/mol
Appearance Grey-Blue, Metallic
Purity 99.95 % (3N5)
Thermal Conductivity 57 W/m·K
Coefficient of Thermal Expansion 6.3 × 10⁻⁶ /K
Melting Point 3 017 °C
Theoretical Density 16.6 g/cm³
Z Ratio 0.262
E-Beam Compatibility Excellent
E-Beam Crucible Liner Material Graphite
Temperature for Given Vapour Pressure (Torr) 10-8:  1,960 °C
10-6:  2,240 °C
10-4:  2,590 °C

Applications & Industries

  • Semiconductor Manufacturing – Barrier layers, interconnects, and contact metals.

  • Optical Coatings – X-ray mirrors, anti-reflective, and high-durability films.

  • Superconducting Films – Research in quantum and cryogenic electronics.

  • Vacuum Metallurgy – High-temperature, corrosion-resistant alloy production.

  • Laboratory R&D – Thin-film growth and advanced coating studies.

FAQ

Q1: What makes Tantalum ideal for thin-film applications?
Its exceptional melting point, chemical stability, and low vapour pressure produce films with high purity and uniform adhesion.

Q2: Can these pellets be used in E-Beam deposition?
Yes. Their high density and purity ensure smooth evaporation with minimal spitting during E-Beam use.

Q3: Are other geometries available?
Yes. Cell Lab offers custom dimensions, shapes, and packing weights for pilot or industrial use.

Q4: What crucible materials are recommended?
Graphite liners are ideal due to their excellent thermal conductivity and chemical compatibility with Tantalum.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.