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Formula: Al₂O₃ 99.9
Form: Powder
Material: Sapphire
CAS Number: 1344-28-1
Commodity: Ceramics
Max Particle Size:
60μm
Sapphire Powder offers exceptional hardness, thermal resistance, and dielectric properties, enabling its integration into high-performance ceramics, composites, and precision polishing media. It plays a crucial role in electronics, advanced optics, and aerospace engineering. Core applications include use in insulating ceramics for electronic substrates, polishing compounds for LED wafer preparation, and strengthening agents in transparent composites. Particle morphology and chemical purity significantly influence its performance—fine-grade powders enhance optical transmittance and mechanical strength in transparent dental and optical ceramics, while low-sodium formulations improve insulation and fire resistance in high-voltage applications. Advanced synthesis methods reduce contamination and optimize grain size, expanding its functionality in additive manufacturing and flame-resistant electronics. Sapphire Powder remains a vital feedstock for engineered materials across both experimental and industrial environments.
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 |
|---|---|
| Refractive index | 1.71-1.79 |
| Useful optical transmission range | 200-5500nm |
| Apparent porosity( % ) | 0 |
| Water absorption - saturation( % ) | 0 |
| Density( gcm⁻³ ) | 3.985 |
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 ) | 1600-1800 |
| Tensile strength( MPa ) | 250-400 |
Pultrusions
| Element | Value |
|---|---|
| Compressive strength( MPa ) | 2100 |
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Zirconium Hydride Powder Formula: ZrH₂
Percentage Purity: 99.5%
Maximum Particle Size: 150µm
Weight: 500g
CAS Number: 7704-99-6
UOM Code: 057-083-47
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Zirconium Carbide Powder Formula: ZrC
Percentage Purity: 99.5%
Maximum Particle Size: 45µm
Weight: 50g
CAS Number: 12070-14-3
UOM Code: 428-605-16
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Zirconium Powder Formula: Zr
Percentage Purity: 99.2%
Maximum Particle Size: 45µm
Weight: 2000g
CAS Number: 7440-67-7
UOM Code: 151-149-03
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Zirconium/Aluminum Alloy Precursor Powder (Zr90/Al10) Formula: Zr90/Al10
Mean Particle Size: 45µm
Weight: 50g
Type: Alloy Pre-cursor
UOM Code: 113-318-63
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