Palladium Tube

Palladium Tube combines excellent corrosion resistance, high hydrogen permeability, and catalytic performance in a hollow form ideal for gas transport and reactive processing environments. Industries such as chemical engineering, renewable energy, and analytical instrumentation use palladium tubes for hydrogen purification systems, catalytic membrane reactors, and protective gas delivery conduits. Specific applications include selective hydrogen separation, catalytic reforming processes, and laboratory-scale gas flow control. In research, they are central to studies on hydrogen transport mechanisms, membrane reactor optimization, and long-term corrosion resistance. Their ability to integrate structural stability with functional catalytic and separation properties ensures a critical role in advanced technological systems.

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Tolerance

Properties

Reference & Citations

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Tolerances

Tube

Outside Diameter	=<2mm	±0.05mm
Outside Diameter	2mm - 5mm	±0.1mm
Outside Diameter	>5mm	±5%
Wall Thickness		±10%

Material Properties for Precious Metals

Atomic Properties

Element	Value
Atomic number	46
Crystal structure	Face centred cubic
Electronic structure	Kr 4d¹⁰
Valences shown	2, 3, 4
Atomic weight( amu )	106.42
Thermal neutron absorption cross-section( Barns )	6
Photo-electric work function( eV )	5
Natural isotope distribution( Mass No./% )	108/ 26.7
Natural isotope distribution( Mass No./% )	110/ 11.8
Natural isotope distribution( Mass No./% )	104/ 11.0
Natural isotope distribution( Mass No./% )	102/ 1.0
Natural isotope distribution( Mass No./% )	105/ 22.2
Natural isotope distribution( Mass No./% )	106/ 27.3
Atomic radius - Goldschmidt( nm )	0.137
Ionisation potential( No./eV )	1/ 8.3
Ionisation potential( No./eV )	2/ 19.4
Ionisation potential( No./eV )	3/ 32.9

Mechanical Properties

Element	Value
Material condition	Soft
Material condition	Hard
Poisson's ratio	0.39
Poisson's ratio	0.39
Bulk modulus( GPa )	187
Bulk modulus( GPa )	187
Tensile modulus( GPa )	121
Tensile modulus( GPa )	121
Hardness - Vickers( kgf mm⁻² )	40
Hardness - Vickers( kgf mm⁻² )	100
Tensile strength( MPa )	140-195
Tensile strength( MPa )	325
Yield strength( MPa )	205
Yield strength( MPa )	34.5

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	10.8@20@20
Temperature coefficient( K⁻¹ )	0.0042@0-100
Thermal emf against Pt (cold 0C - hot 100C)( mV )	-0.57

Physical Properties

Element	Value
Boiling point( C )	3140
Density( gcm⁻³ )	12@20°C

Thermal Properties

Element	Value
Melting point( C )	1554
Latent heat of evaporation( J g⁻¹ )	3398
Latent heat of fusion( J g⁻¹ )	157
Specific heat( J K⁻¹ kg⁻¹ )	244@25
Thermal conductivity( W m⁻¹ K⁻¹ )	71.8@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	11@0-100