Sapphire Single Crystal
Formula: Al₂O₃ 99.9
Length 1: 25mm
Length 2: 25mm
Orientation: Not Identified
Surface Finish: Polished on Both Sides
Polish: 0.05 - 0.1µm Ra
Thickness: 0.5mm
CAS Number: 1344-28-1
UOM Code: 561-274-38
Legacy Code: AL663051
Distributor Code: GF56127438
SKU: 1000025336
Product Code: AL66-SH-000151
Length 1: 25mm
Length 2: 25mm
Orientation: Not Identified
Surface Finish: Polished on Both Sides
Polish: 0.05 - 0.1µm Ra
Thickness: 0.5mm
CAS Number: 1344-28-1
UOM Code: 561-274-38
Legacy Code: AL663051
Distributor Code: GF56127438
SKU: 1000025336
Product Code: AL66-SH-000151
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 |