Overview of Conical /Cylinderical/Rectangular/Square/Boat Alumina/Al2O3 Ceramic Crucibles

Conical /Cylinderical/Rectangular/Square/Boat Alumina/Al2O3 Ceramic Crucibles is precision-engineered vessels made from 99%+ pure aluminum oxide (Al₂O₃). Designed for high-temperature and corrosive environments, they are widely used in semiconductor processing, heat treatment, CVD/PVD applications, and laboratory experiments. Their superior thermal and chemical stability ensures reliable performance under extreme conditions.

Key Features of Conical /Cylinderical/Rectangular/Square/Boat Alumina/Al2O3 Ceramic Crucibles

Extreme Temperature Resistance – Stable up to 1800°C with low thermal expansion.

Superior Chemical Resistance – Resists acids, alkalis, and aggressive gases.

High Mechanical Strength – Durable and resistant to thermal shock.

Precision Design – Smooth surfaces & uniform dimensions for consistent processing.

Customizable Shapes & Sizes – Available in standard and tailored configurations.

(Conical /Cylinderical/Rectangular/Square/Boat Alumina/Al2O3 Ceramic Crucibles)

Specifications of Conical /Cylinderical/Rectangular/Square/Boat Alumina/Al2O3 Ceramic Crucibles

Alumina ceramic crucibles handle extreme heat and chemicals well. They come in several shapes for different jobs. Alumina content is high, usually 99.5% Al2O3 or more. This makes them very strong. They resist temperatures up to 1800°C easily. Thermal shock resistance is good also. Sudden temperature changes cause less cracking. Density is high, around 3.8 to 3.9 g/cm³. This prevents leaks. The surface is smooth. This stops samples sticking. Chemical inertness is excellent. Acids and bases don’t attack the material. These crucibles work for melting metals, analyzing ash, sintering powders, and crystal growth.

Conical crucibles have a pointed bottom. They are good for pouring liquids cleanly. They fit some filtration setups. Cylindrical crucibles are simple tubes. They offer high volume for their size. Uniform heating happens easily inside them. Rectangular crucibles have flat sides. They pack efficiently in furnaces. More samples fit in one run. Square crucibles are similar to rectangular ones. They provide straight walls also. They are stable on surfaces.

Boat-shaped crucibles are long and open on top. They are ideal for pushing samples in and out of hot zones. They suit continuous processes. They hold bars or pieces for heat treatment. All shapes share the alumina advantages. Purity is consistent. High temperature use is reliable. Long service life is expected. Care is needed. Avoid severe impacts. Follow recommended heating cycles. These crucibles serve labs and industry well. They handle demanding tasks reliably. Material purity is key. Consistent performance matters.

(Conical /Cylinderical/Rectangular/Square/Boat Alumina/Al2O3 Ceramic Crucibles)

Applications of Conical /Cylinderical/Rectangular/Square/Boat Alumina/Al2O3 Ceramic Crucibles

Alumina ceramic crucibles handle high heat well. They resist chemical attacks. Different shapes suit specific jobs. Conical crucibles work for melting small metal samples. Labs use them often. Their shape helps pour liquids precisely. Cylindrical crucibles are tall and straight. This design holds more material. They are good for long heat treatments. Furnaces use them for sintering powders. Rectangular crucibles fit neatly in furnace spaces. This shape uses heat efficiently. They work for annealing metal parts. Square crucibles offer stable bases. They prevent tipping during handling. Foundries melt alloys in them. The corners help scrape out residues. Boat shaped crucibles are long and shallow. They expose material surfaces evenly. These are ideal for vapor deposition processes. Semiconductor makers rely on them. All these crucibles withstand extreme temperatures. They survive rapid heating and cooling cycles. Alumina purity matters. High purity means less contamination. This is crucial for sensitive materials. Users pick the shape for their task. Melting gold needs a small conical crucible. Growing crystals might use a cylindrical one. Heat treating tools could need a rectangular shape. Boat shapes are essential for coating applications. Square crucibles offer stability for heavy melts. Material scientists trust alumina crucibles. They perform reliably in tough conditions. Their durability saves costs over time.

Company Profile

Alumina Technology Co., Ltd,. We focus on the research and development, production and sales of alumina products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2005, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.

Our products includes but not limited to Alumina Boat, Alumina Crucible, Alumina Dish, Alumina Foam Filter, Alumina Plate, Alumina Rod, Alumina Bar, Alumina Balls, Filter Alumina, Nano Alumina Powder, Spherical Alumina Powder, ect. please feel free to contact us.([email protected])

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Conical /Cylinderical/Rectangular/Square/Boat Alumina/Al2O3 Ceramic Crucibles

Here are 5 FAQs about Alumina Ceramic Crucibles (Conical, Cylindrical, Rectangular, Square, Boat):

What shapes do you offer?
We make Alumina crucibles in several common shapes. You can get conical crucibles. You can get cylindrical ones. We also have rectangular crucibles. Square crucibles are available too. Boat-shaped crucibles complete our range. These shapes fit different lab needs.

How hot can these crucibles get?
These Alumina crucibles handle very high heat. They work fine up to about 1700°C. Some types go even higher, near 1800°C. Check the specific product details for exact numbers. This makes them good for melting metals or heating powders.

Do these crucibles last long?
Crucible life varies a lot. It depends on what you heat inside. It depends on the maximum temperature you use. It depends on how fast you heat and cool things. Gentle handling helps them last longer. Rough handling or thermal shock can break them faster. Expect many uses under normal conditions.

What chemicals can they resist?
Alumina ceramic resists many chemicals well. Strong acids generally don’t hurt it much. Strong bases usually don’t affect it much either. It handles most molten salts. But avoid hydrofluoric acid. Avoid very strong phosphoric acid. Avoid strong alkalis at high temperatures. These can damage the Alumina.

How do I pick the right shape?
Choose the shape based on your sample. Use conical for easy pouring of liquids. Use cylindrical for general melting or holding solids. Rectangular and square shapes fit furnace spaces well. Use boat shapes for long samples. Use them for continuous flow processes. Think about how you load and unload material. Think about your furnace size.

(Conical /Cylinderical/Rectangular/Square/Boat Alumina/Al2O3 Ceramic Crucibles)