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SINTYRON 95 rectangular alumina boat ceramic crucibles for laboratory analysis
Alumina ceramic boats are containers made of high-purity alumina ceramics used in high-temperature and corrosive processes. Their core value lies in their superior high-temperature resistance, chemical inertness, and high purity, making them indispensable key consumables in modern high-tech industries, particularly in semiconductors, photovoltaics, and advanced materials.
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SINTYRON 95 rectangular alumina boat ceramic crucibles for laboratory analysis

Rectangular alumina ceramic crucibles have several advantages and serve various purposes in
laboratory and industrial settings.
Advantages:
1.Extremely High Temperature Resistance:Capable of withstanding long-term operating temperatures up to 1600°C - 1800°C,
and even higher temperatures for short periods.Will not melt, deform, or release harmful gases.
2.Excellent Corrosion Resistance: Extremely resistant to most acids, alkalis, salts, and halogen gases (such as fluorine and chlorine).
Remains stable in harsh chemical environments without contaminating the materials it carries.
3.High Purity and Low Contamination: Made from high-purity (e.g., 99%, 99.6%, 99.8%) alumina powder. Does not release metal ions
or other impurities at high temperatures, which is crucial for the semiconductor and photovoltaic industries, ensuring that silicon wafers
or epitaxial wafers are not contaminated.
4.Excellent Mechanical Strength: High hardness and good wear resistance, capable of withstanding certain mechanical shocks and loads.
Structurally stable, not prone to cracking under repeated thermal cycling.
5.Excellent thermal stability: Low coefficient of thermal expansion, capable of withstanding rapid heating and cooling (thermal shock),
and not easily cracked due to drastic temperature changes.
6.Good insulation: It is an excellent electrical insulator, which is very important in the manufacturing of electronic components.
Applications:
1.Semiconductor Manufacturing: Used in processes such as diffusion furnaces and LPCVD to support silicon wafers and perform doping,
oxidation, and chemical vapor deposition.
2.Solar Photovoltaic Industry: Used in the manufacturing of polycrystalline and monocrystalline silicon wafers for ingot casting, sintering,
and wafer transport.
3.Materials Science and Laboratories: Used as crucibles or sintering plates in high-temperature furnaces for powder metallurgy, ceramic
sintering, new material synthesis, and heat treatment.
4.LED Industry: Used as a base for graphite disks supporting sapphire substrates in MOCVD equipment.
5.Other Industrial Sector: Used in phosphor sintering, magnetic material sintering, and glass melting.
| Product | Alumina boat |
| Material | Al2O3 |
| Purity | 99%, 99.3%, 99.5% |
| Color | White/Ivory |
| Shape | Arc/Square/Rectangle/Cylinder/Boat |
| Capacity | 1-2000 ml |
| Density | 3.98 g/cm3 |
| Melting Point | 2020℃ |
| Max. Working Temperature | 1800 ℃or 3180 F |
Further, these can also be custom made on request.

Alumina Crucible Cylinder Type
| Regular size +- mm | |||
| Capacity (ml) | Top dia (mm) | Bottom dia (mm) | Height(mm) |
| 3ml | 20mm | 16mm | 17mm |
| 4ml | 25mm | 19mm | 18mm |
| 5ml | 26mm | 18mm | 21mm |
| 10ml | 30mm | 20mm | 28mm |
| 15ml | 35mm | 21mm | 30mm |
| 20ml | 38mm | 24mm | 35mm |
| 25ml | 40mm | 25mm | 35mm |
| 30ml | 45mm | 27mm | 39mm |
| 40ml | 47mm | 28mm | 43mm |
| 50ml | 50mm | 30mm | 48mm |
| 100ml | 61mm | 31mm | 60mm |
| 150ml | 73mm | 43mm | 67mm |
| 200ml | 82mm | 43mm | 70mm |
| 300ml | 88mm | 53mm | 85mm |
| 500ml | 108mm | 62mm | 108mm |
| 800ml | 113mm | 62mm | 140mm |





Performance For Industrial Ceramic
|
Item |
|
|
|
|
Al2O3 Content(%) |
99 |
|
Physical Characteristics |
Heat resistance(℃) |
1800 |
|
Bulk density(g/cm3) |
3.9 |
|
|
Water absorption(%) |
0 |
|
| Flexural strength(Mpa) |
360 |
|
|
Mechanical Characteristics |
Hardness vickers (Gpa) |
15.6 |
|
Elastic modulus (Gpa) |
370 |
|
|
Poisson’s ratio |
0.23 |
|
|
Thermal Characteristics |
Linear expansion coefficient(20℃-500℃) 10-6/℃ |
8 |
|
Thermal conductivity w/(m.k) |
32 |
|
|
Specific Heat *10-3J/(kg*K) |
0.9 |
|
|
Electrical Characteristics |
Dielectric constant (1MHZ) |
9.9 |
|
Dielectric loss angle *10-4 |
1 |
|
|
Dielectric strength *106V/m |
15 |
Application
Used for testing laboratory and a variety of industrial analysis.
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Company Information

FAQ
Why us?
* Professional manufacturer since 1997.
* Strict quality control on production process and tolerance.
* Free samples available
* Customized production based on your drawing or specification
* On-time delivery and reliable support and service
* Inventory available for quick shipment
* We keep confidentiality of all the drawings and business information between us.
Are you a trading company or a manufacturer?
* We are a manufaturer.
Can you provide the free samples?
* Yes,we can offer free sample if we have it in stock,but the courier fee is to be collected.
Do you accept customized production based our specification?
* Yes,we offer OEM and ODM service. Just send us your drawing if you have it. If you don’t have a drawing, just tell us your idea, we will work out the drawing for you.
What's the delivery time?
* 7 working days for standard products 30 days for customized products.
What is the MOQ?
* No limit to the quantity. We can offer the best proposal and solutions according to your condition.
What is the payment terms you accept?
* T/T,LC,Western Union,moneygram are acceptable.
How to deal with the faulty?
* Firstly, Our product are produced in strict quality control system and the defective rate will be less than 2%.
If there are problems with the product, we will provide free replacement.

