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Formula: Os
Form: Powder
Material: Osmium
CAS Number: 7440-04-2
Commodity: Metals
Purity:
99.9%
Max Particle Size:
500μm
Hazard Pictogram:
GHS02, GHS05, GHS07
Osmium powder is a highly dense, ductile metal powder. Available in 6 variations, it can be customized to meet the needs of many applications. The hardness and wear resistance of Osmium Powder means it is commonly used for electrical contacts and instrument pivot bearings. Its high density also allows it to be used as ballast for aircraft control and instrument gyroscopes. Osmium Powder’s properties make it ideal for the precision engineering of small components where high density is required.
Flammable
Corrosive
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 | 76 |
| Crystal structure | Hexagonal close packed |
| Electronic structure | Xe 4f¹⁴ 5d⁶ 6s² |
| Valences shown | 0, 1, 2, 3, 4, 5, 6, 7, 8 |
| Atomic weight( amu ) | 190.2 |
| Thermal neutron absorption cross-section( Barns ) | 15.3 |
| Photo-electric work function( eV ) | 4.8 |
| Natural isotope distribution( Mass No./% ) | 192/ 41.0 |
| Natural isotope distribution( Mass No./% ) | 184/ 0.02 |
| Natural isotope distribution( Mass No./% ) | 187/ 1.6 |
| Natural isotope distribution( Mass No./% ) | 189/ 16.1 |
| Natural isotope distribution( Mass No./% ) | 186/ 1.58 |
| Natural isotope distribution( Mass No./% ) | 188/ 13.3 |
| Natural isotope distribution( Mass No./% ) | 190/ 26.4 |
| Atomic radius - Goldschmidt( nm ) | 0.135 |
| Ionisation potential( No./eV ) | Feb-16 |
| Ionisation potential( No./eV ) | 1/ 8.7 |
Mechanical Properties
| Element | Value |
|---|---|
| Material condition | Soft |
| Material condition | Hard |
| Poisson's ratio | 0.25 |
| Poisson's ratio | 0.25 |
| Bulk modulus( GPa ) | 373 |
| Bulk modulus( GPa ) | 373 |
| Tensile modulus( GPa ) | 559 |
| Tensile modulus( GPa ) | 559 |
| Hardness - Vickers( kgf mm⁻² ) | 300-350 |
| Hardness - Vickers( kgf mm⁻² ) | 670-1000 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 8.8@20@20°C |
| Superconductivity critical temperature( K ) | 0.66 |
| Temperature coefficient( K⁻¹ ) | 0.0041@0-100°C |
Physical Properties
| Element | Value |
|---|---|
| Boiling point( C ) | 5027 |
| Density( gcm⁻³ ) | 22.5@20°C |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 3045 |
| Latent heat of evaporation( J g⁻¹ ) | 3305 |
| Latent heat of fusion( J g⁻¹ ) | 154 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 131@25 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 87.6@0-100°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 4.57@0-100 |
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Percentage Purity: 99.2%
Maximum Particle Size: 45µm
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Type: Alloy Pre-cursor
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