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Alumina Point Bottom Crucible
Alumina Point Bottom Crucibles are a range of 8 crucibles made of high purity alumina with a point bottom design for the convenient pouring of molten contents. They possess excellent thermal shock resistance and high temperature strength. The range includes crucibles with volumes from 5mL to 100mL and maximum service temperatures from 1600°C to 1700°C. Alumina crucibles are commonly used in laboratories and industry for high temperature melting, annealing and sintering applications such as metal alloy processing or ceramic and glass making.
Formula: Al₂O₃
Percentage Purity: 99.8%
Outer Diameter Top: 18.2mm
Outer Diameter Bottom: 18mm
Internal Diameter at Top: 14.3mm
External Height of Cylinder: 63.5mm
External Height Overall: 77.6mm
Internal Height Overall: 62.8mm
Wall Thickness: 1.8mm
CAS Number: 1344-28-1
UOM Code: 865-115-24
Legacy Code: AL608567
Distributor Code: GF86511524
Percentage Purity: 99.8%
Outer Diameter Top: 18.2mm
Outer Diameter Bottom: 18mm
Internal Diameter at Top: 14.3mm
External Height of Cylinder: 63.5mm
External Height Overall: 77.6mm
Internal Height Overall: 62.8mm
Wall Thickness: 1.8mm
CAS Number: 1344-28-1
UOM Code: 865-115-24
Legacy Code: AL608567
Distributor Code: GF86511524
SKU: 1000023093
Product Code: AL60-CB-000422
Tolerances
Point Bottom
| Outer Diameter | ±10% | |
|---|---|---|
| External Height of Cylinder | ±10% | |
| External Height Overall | ±10% | |
| Internal Height Overall | ±10% | |
| Internal Diameter at Top | ±10% | |
| Outer Diameter Bottom | ±10% |
Tolerances
Point Bottom
| Outer Diameter | ±10% | |
|---|---|---|
| External Height of Cylinder | ±10% | |
| External Height Overall | ±10% | |
| Internal Height Overall | ±10% | |
| Internal Diameter at Top | ±10% | |
| Outer Diameter Bottom | ±10% |
$93.08
each
- Buy 5 for $75.39 each and save 19%
- Buy 10 for $68.88 each and save 26%
No Minimum order
Approx. 2 weeks leadtime
Free technical support
*Free delivery worldwide
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 | 9-10.1 |
| Dielectric strength( kV mm⁻¹ ) | Oct-35 |
| Volume resistivity( Ohmcm ) | >10¹⁴@25 |
Physical Properties
| Element | Value |
|---|---|
| Apparent porosity( % ) | 0 |
| Water absorption - saturation( % ) | 0 |
| Density( gcm⁻³ ) | 3.9 |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 2100 |
| Upper continuous use temperature( C ) | 1700 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 850-900@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 26-35@20°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 8@20-1000°C |
Mechanical Properties
| Element | Value |
|---|---|
| Tensile modulus( GPa ) | 300-400 |
| Hardness - Knoop( kgf mm⁻² ) | 2100 |
| Hardness - Vickers( kgf mm⁻² ) | 1500-1650 |
| Shear strength( MPa ) | 330 |
| Tensile strength( MPa ) | 260-300 |
Pultrusions
| Element | Value |
|---|---|
| Compressive strength( MPa ) | 2200-2600 |
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Particle Size D50: 0.45µmµm
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