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Formula: Al₂O₃ /Cr₂O₃ /Si₂O₃
Form: Bar
Material: Ruby
CAS Number: 1344-28-1
Commodity: Ceramics
Side Length:
2mm
Side Length (Of Longer Side):
2mm
Length:
12mm
Ruby Bar is made of synthetic ruby which is an extremely hard and durable material composed of aluminum oxide crystals. The hardness and strength of ruby make this product well-suited for applications requiring high wear resistance, such as bearings for precision instruments. The corrosion resistance of ruby also makes it ideal for use in harsh environments. With its exceptional physical properties, Ruby Bar can meet demanding mechanical and chemical performance requirements across many industries.
Tolerances
Bar
| Side Length | =<10mm | ±10% |
|---|---|---|
| Side Length | >10mm | ±1mm |
| Side Length (Of Longer Side) | >10mm | ±1mm |
| Side Length (Of Longer Side) | =<10mm | ±10% |
| Length | <100mm | ±1mm |
| Length | >=100mm | +5% / -1% |
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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