Supporting cutting edge research and development with advanced materials to your needs.
High performance materials for extreme conditions.
Innovative and lightweight materials with high mechanical properties and durability.
Materials used in chemical engineering from consumables to innovative solutions.
Advanced materials characterized by high electrical or insulation performance.
High quality materials for renewable energy.
Biocompatible and biodegradable materials to the highest standards.
High purity, biocompatible materials for high performance devices and applications.
High purity materials and crucibles suitable to your needs.
State of the art materials for the next generation of technologies.
High performance materials for extreme conditions.
Durable materials for corrosive environments.
Foils, disks or windows across a range of materials to facilitate innovation.
Polymers, metal foils, and sustainable materials for your packaging needs.
Our 170,000+ range of products can cater to all your research needs.
A variety of specialist materials to support space technology needs.
Highest quality materials including graphite and lithium compounds.
High purity materials to benefit your evaporation processes.
Thin, alkali-free, borosilicate glass for LCD displays to electronic packaging applications.
Ground-breaking graphene-based nanocomposites for regenerative medicine to R&D.
An industry-leading polyimide foil by DuPont™.
A high-performance para-aramid fiber revolutionizing materials science.
A machinable glass ceramic material offering higher performance, reliability, and durability.
This versatile polyester thin film by DuPont™.
It has excellent heat and flame-resistant properties from DuPont™.
A ceramic that addresses the traditional issues of brittleness, fragility, and hardness.
This range of high purity alumina (HPA) powders has exceptional purity levels, making it one of the purest forms of alumina commercially available.
This high temperature insulation material has exceptional properties and versatile applications.
This transparent, heat resistant polyolefin resin has unique properties for a range of applications.
Toggle Nav
Formula: Si
Form: Powder
Material: Silicon
CAS Number: 7440-21-3
Commodity: Metals
Hazard Pictogram:
GHS02,GHS07
Available in a range of 75 variations, Silicon Powder has a high melting point of 1414°C and is a semiconductor with electrical resistivities between 0.001 - 100 ohm-cm. With its unique properties, it’s used to make solar cells, computer chips and other electronic components. The wide selection of Silicon Powders we offer allows you to choose the right grade for your specific application with ease.
Flammable
Health hazard/Hazardous to the ozone layer
Tolerances
Powder
| Mean Particle Size | Nominal | |
|---|---|---|
| Minimum Particle Size | Nominal | |
| Maximum Particle Size | Nominal | |
| Maximum Particle Size | Nominal | |
| Particle Size D10 | Nominal | |
| Particle Size D50 | Nominal | |
| Particle Size D90 | Nominal |
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 |