Description

Technical Parameters

Defining Purity in Tantalum Metal Crucibles

Pure Tantalum Metal Cruciblesare containers manufactured entirely from ultra‑refined tantalum metal, with impurity levels minimized to ensure zero contamination in the most demanding high‑temperature industrial processes.

"Pure" in this context typically means tantalum content ≥ 99.95%, often reaching 99.98–99.99% for critical applications. Trace impurities such as Fe, Ni, Cr, O, N, and C are restricted to just a few ppm through processes including double vacuum arc remelting (VAR), electron beam melting (EBM), and zone refining. This degree of Tantalum Metalpurity guarantees that the crucible itself does not alter the chemistry or microstructure of the processed material.

Impurity	Max Level (ppm) – 99.99% Grade	Effect if Exceeded
Fe	≤ 5	Inclusion formation, altered alloy strength
Ni	≤ 3	Reduced corrosion resistance of melt
O	≤ 5	High‑temperature embrittlement
C	≤ 10	Unwanted carbide precipitation

Industrial Roles of Pure Tantalum Metal Crucibles

Semiconductor Crystal Growth – Containment of high‑purity melts for SiC or GaN boules, where even ppb‑level contaminants ruin wafer quality.

Nuclear Material Handling – Safe melting and casting of actinide alloys with minimal neutron‑absorbing impurities.

Rare Earth Extraction – Electrolytic or metallothermic reduction in fluoride/chloride melts, preserving magnetic performance of Nd, Dy, Tb.

The crucibles retain structural stability above 2400 °C in inert atmospheres, with negligible vapor pressure and excellent resistance to mineral acids and molten oxides.

Performance Advantages of Pure Tantalum Metal Crucibles

Their ultra‑clean interior surface eliminates nucleation sites for spurious phases, enabling predictable solidification. Exceptional creep resistance (due to fine, recrystallized grains) allows loads of ~10 MPa at 2000 °C. Smooth finishes (Ra ≤ 0.4 µm) facilitate easy cleaning and prevent melt adhesion, making them ideal for fully automated, high‑throughput production lines in aerospace alloy and electronics material plants.

Customized 99.95% Pure Melting Tantalum crucible from ZhenAn

who choose us?

Our Product Advantages
High Purity
Purity levels of 99.995%-99.997%, with exceptionally low impurities such as Pd and Cd.
Superior Wire Quality
Wires are evenly unwound in continuous lengths, ensuring seamless operation.
Smooth surface with no oil residues.
No Wire Feeding Issues
Free from defects such as particles, tangled wires, knots, bends, breakages, oxidation, spray arc failures, or clogged nozzles.
Free Testing Reports
We provide complimentary test reports on spray layer thickness, porosity, bond strength, and coating examinations for capacitors and thermally sprayed zinc coatings.

one-stop solution

professional team

high quality

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Pure Tantalum Metal Crucibles

Defining Purity in Tantalum Metal Crucibles

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Industrial Roles of Pure Tantalum Metal Crucibles

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Performance Advantages of Pure Tantalum Metal Crucibles​

Performance Advantages of Pure Tantalum Metal Crucibles