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CG MATERIAL

Niobium Crucible

Niobium Crucible

A niobium crucible is a container made of niobium metal used for high-temperature applications such as chemical analysis, melting and casting of metals, and crystal growth. Niobium is a refractory metal with a high melting point, excellent corrosion resistance, and good thermal conductivity, making it an ideal material for use in high-temperature applications. Niobium crucibles are commonly used in industries such as aerospace, semiconductor, and metallurgy for their excellent performance under extreme conditions. They can be designed in various shapes and sizes depending on the specific application.

Niobium Crucibles Properties (Theoretical)

Molecular Weight 92.9
Appearance Silvery
Melting Point 2468 °C
Boiling Point 4742 °C
Density 8.57 g/cm3
Solubility in H2O N/A
Electrical Resistivity 12.5 microhm-cm @ 0 °C
Electronegativity 1.6 Paulings
Heat of Vaporization N/A
Poisson's Ratio 0.4
Specific Heat 0.064 Cal/g/K @ 25 °C
Tensile Strength N/A
Thermal Conductivity 0.537 W/cm/K @ 298.2 K
Thermal Expansion 7.3 µm/(m·K)
Vickers Hardness 1320 MPa
Young's Modulus 105 GPa

 

Materials Niobium and Niobium Alloy
Purity 99.5%/99.9%/99.95%
Standard ASTM B394


Niobium Crucible with Lid Specifications

  • Material:  RO4200, RO4210
  • Purity: 99.9%, 99.95%

Niobium Metal Chemical Composition

Material

Main elements (%)

Impurities (Maximum %)

Nb

Fe

Si

Ni

W

Mo

Ti

Ta

O

C

H

N

RO4200

Remainder

0.004

0.004

0.002

0.005

0.005

0.002

0.07

0.015

0.0040

0.0015

0.003

RO4210

Remainder

0.01

0.01

0.005

0.02

0.01

0.004

0.10

0.02

0.01

0.0015

0.01


Niobium Crucible Mechanical Property 

Niobium is gray, like all other metals. However, by applying a pacifying oxide layer, it will gleam in a beautiful array of colors. In fact, niobium does not just look pretty. Like tantalum, it's resistant to many chemicals and can be formed easily even at low temperatures.

Grade

Tensile strength

psi(MPa), ≥

Yield strength

δ0.2, psi (MPa),≥

Elongation in 1"/2" gage length, %, ≥

>=0.010

<0.010

RO4200, RO4210

18000 (125)

12000 (85)

25

20

Packaging

We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.

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