Silicon Rod

Formula: Si

Form: Rod

Material: Silicon

CAS Number: 7440-21-3

Commodity: Metals

Purity: 99.999%

Structure: Crystalline

Our wide range of Silicon Rods are available in 16 variations. They showcase an array of useful material properties, including excellent semiconducting behavior and a high melting point. Key applications of Silicon Rods take advantage of these traits, using them in semiconductor device fabrication, high temperature mechanical parts and as precursors for growing single crystal silicon. Whether needing all-purpose silicon rods or a highly customized variant, our selection provides researchers and engineers with just what they’re looking for.

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Technical Data Sheet Tolerance Properties

each

Tolerances

Rod

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

Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	14
Crystal structure	Diamond
Electronic structure	Ne 3s² 3p²
Valences shown	4
Atomic weight( amu )	28.0855
Thermal neutron absorption cross-section( Barns )	0.16
Photo-electric work function( eV )	4.2
Natural isotope distribution( Mass No./% )	30/ 3.10
Natural isotope distribution( Mass No./% )	29/ 4.67
Natural isotope distribution( Mass No./% )	28/ 92.23
Atomic radius - Goldschmidt( nm )	0.117
Ionisation potential( No./eV )	5/ 167
Ionisation potential( No./eV )	1/ 8.15
Ionisation potential( No./eV )	2/ 16.3
Ionisation potential( No./eV )	3/ 33.5
Ionisation potential( No./eV )	4/ 45.1
Ionisation potential( No./eV )	6/ 205

Mechanical Properties

Element	Value
Hardness - Mohs	7
Material condition	Polycrystalline
Poisson's ratio	0.42
Bulk modulus( GPa )	100
Tensile modulus( GPa )	113

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	23 x 10¹⁰@20@20°C
Thermal emf against Pt (cold 0C - hot 100C)( mV )	-41.56

Physical Properties

Element	Value
Boiling point( C )	2355
Density( gcm⁻³ )	2.34@20°C

Thermal Properties

Element	Value
Melting point( C )	1410
Latent heat of evaporation( J g⁻¹ )	13700
Latent heat of fusion( J g⁻¹ )	1650
Specific heat( J K⁻¹ kg⁻¹ )	703@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	80-150@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	4.7-7.6@0-100°C