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Niobium Crucible

Niobium Crucible


With high purity (≥99.9%), high level of resistance and excellent formability, our niobium crucible is appropriate for manufacturing synthetic polycrystalline diamonds. It is often used for high-pressure and high-temperature synthesis.
In different forms, niobium crucible can be used in the field of synthetic diamonds, fiber optic or architectural glass, chemical engineering, superconductors, thin-film, reactors and high temperature vacuum furnaces and sodium vapor lamps.

Package and Transportation

We pack niobium crucible in plywood case and send them by ocean or air.

Mechanical Requirements (Annealed Condition)

Grade Tensile strength δbpsi (MPa), ≥ Yield strength δ0.2, psi (MPa),≥ Elongation in 1"/2" gage length, %, ≥
RO4200-1 RO4210-2 18000 (125) 12000 (85) 25

Chemical Composition of Niobium Crucible

Chemistry PPM
Designation Chief component Impurities maximum
Nb Ta Si Ni W Mo Ti Fe O C H N
Nb1 Remainder 700 50 50 50 30 20 50 150 40 15 30
Nb2 Remainder 1000 80 40 100 100 40 80 180 60 15 50
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