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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.
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 |