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Formula: Al₂O₃ /Cr₂O₃ /Si₂O₃
Form: Powder
Material: Ruby
CAS Number: 1344-28-1
Commodity: Ceramics
Max Particle Size:
45μm
Ruby Powder is a fine-grained material available in 19 variations available. With properties like hardness, strength and thermal conductivity, it can be utilized in applications such as surface coatings, polishing compounds and the creation of custom ceramics. The availability of both synthetic and natural forms in our range of sizes makes Ruby Powder suitable for research and development across industrial sectors.
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 Ceramics
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Good |
| Acids - dilute | Good |
| Alkalis | Good |
| Halogens | Good |
| Metals | Good |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant | 7.5-11.5 |
| Dielectric strength( kV mm⁻¹ ) | 15-50 |
| Volume resistivity( Ohmcm ) | 10¹⁴@25 |
Physical Properties
| Element | Value |
|---|---|
| Useful optical transmission range | 150-5500nm |
| Apparent porosity( % ) | 0 |
| Water absorption - saturation( % ) | 0 |
| Density( gcm⁻³ ) | 3.98 |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 2050 |
| Upper continuous use temperature( C ) | 1800-1950 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 750@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 35-40@20°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 5.8@20-1000°C |
Mechanical Properties
| Element | Value |
|---|---|
| Tensile modulus( GPa ) | 350-390 |
| Hardness - Knoop( kgf mm⁻² ) | 2000 |
| Hardness - Vickers( kgf mm⁻² ) | 2500-3000 |
| Tensile strength( MPa ) | 250-400 |
Pultrusions
| Element | Value |
|---|---|
| Compressive strength( MPa ) | 2100 |
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