Bismuth Cast Rod

Bismuth Cast Rod is a ultra-high-purity (99.999%) metallic form of bismuth produced through controlled casting processes, offering a combination of low thermal conductivity, high diamagnetism, and non-toxicity. Its crystalline structure and brittleness make it ideal for precision machining into components where dimensional stability and corrosion resistance are critical. Industries such as metallurgy, electronics, and advanced materials manufacturing employ bismuth cast rods in alloying, semiconductor device fabrication, and specialized thermal management solutions. Specific applications include serving as feedstock for bismuth-based fusible alloys, components in low-melting-point solder systems, and substrates or contacts in thermoelectric modules. In research, cast bismuth rods are essential for studying anisotropic electrical transport, developing environmentally friendly lead-free solders, and optimizing thermoelectric performance in solid-state cooling devices. The material’s combination of environmental compatibility, specialized physical properties, and adaptability to both experimental and industrial use ensures its ongoing value in science and technology.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Rod

Diameter	=<10mm	±10%
Diameter	>10mm	±5%

Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	83
Crystal structure	Rhombohedral
Electronic structure	Xe 4f¹⁴ 5d¹⁰ 6s² 6p³
Valences shown	3, 5
Atomic weight( amu )	208.9804
Thermal neutron absorption cross-section( Barns )	0.034
Photo-electric work function( eV )	4.4
Atomic radius - Goldschmidt( nm )	0.182
Ionisation potential( No./eV )	5/ 56.0
Ionisation potential( No./eV )	1/ 7.29
Ionisation potential( No./eV )	3/ 25.6
Ionisation potential( No./eV )	4/ 45.3
Ionisation potential( No./eV )	6/ 88.3
Ionisation potential( No./eV )	2/ 16.7

Mechanical Properties

Element	Value
Material condition	Polycrystalline
Poisson's ratio	0.33
Bulk modulus( GPa )	31.3
Tensile modulus( GPa )	34
Hardness - Vickers( kgf mm⁻² )	16-19

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	117@20@20°C
Temperature coefficient( K⁻¹ )	0.0046@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV )	-7.34

Physical Properties

Element	Value
Boiling point( C )	1560
Density( gcm⁻³ )	9.8@20°C

Thermal Properties

Element	Value
Melting point( C )	271.3
Latent heat of evaporation( J g⁻¹ )	857
Latent heat of fusion( J g⁻¹ )	52
Specific heat( J K⁻¹ kg⁻¹ )	124@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	7.9@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	13.4@0-100°C