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Ceramic Crucible

Your Professional Ceramic Crucible Supplier

Superior Ceramics Times Technology Co., Ltd. is a manufacturer specializing in the production of advanced ceramic materials, including nitrides, oxides, carbides, and composite ceramics. Our product portfolio encompasses silicon carbide, aluminum nitride, alumina, ultrapure alumina, yttria, zirconia, high-purity and high-performance boron nitride ceramics, zirconia toughened alumina (ZTA), alumina toughened zirconia (ATZ), silicon nitride, as well as other reinforced, composite, and high-performance ceramic materials.

Advanced Production Technology

The company employs advanced manufacturing technologies, including sintering, molding, grinding, CNC machining, laser drilling, precision grinding, and polishing processes.

Complete Production Equipment

Key production equipment includes sintering furnaces, isostatic presses, grinders, engraving machines, laser cutters, double-sided grinding machines, sand wire cutting devices, and injection molding machines.

 

Professional R&D Team

Our team consists of experienced experts dedicated to researching advanced ceramic materials. To date, the team has published over 100 academic papers, filed five Chinese invention patents, and obtained more than 20 utility model patents.

Professional Service

The product has technical support from Ph.D. experts and other experts during the research and development stage. The process is rigorous during the production process, and the after-sales service is on call 24 hours a day.

 

 

 
 
Parameter

 

Parameters

99.9 Ceramic

99.99Ceramic

Al2O3

Al2O3

Density

g/cm3

3.96

3.98

Flexural strength

MPa

550-600

550-620

Fracture toughness

MPa·m1/2

2.8-4.5

3-4.8

Dielectric constant

εr(20℃,1MHz)

9.9

10

Hardness

GPa

16.3-17.5

18

Volume resistivity

Ω·cm(20℃)

10 14

10 14

Elastic modulus

GPa

400

420

Coefficient of thermal expansion

×10-6/k

6.4-8.9

6.4-8.9

Compressive strength

MPa

2300

2400

Abrasions

g/cm2

0.1

0.1

Thermal conductivity

W/m×k(20℃)

38.9

38.9

Poisson's ratio

/

0.22

0.23

Insulation strength

kv/mm

30

32

Maximum temperature

℃

1700

1700

 

Types of Ceramic Crucible

 

The ceramic crucibles produced by our company mainly include the following types:

 

Zirconia Ceramic Crucible
Through specialized formulation design and advanced sintering processes, this product achieves exceptional high-temperature stability, chemical inertness, and mechanical strength, making it an ideal choice for demanding applications such as high-temperature melting and material synthesis.

 

Alumina Ceramics Crucible
A cylindrical ceramic crucible is a high-temperature vessel produced through high-temperature firing, commonly used for chemical experiments, calcination, and melting under extreme heat. It exhibits outstanding properties such as high-temperature resistance, corrosion resistance, electrical insulation, wear resistance, and minimal contamination of customer materials.

 

Yttria Ceramic Crucible
The yttria ceramic crucible is a high-performance specialty ceramic product manufactured through advanced sintering technology using high-purity yttrium oxide powder. It exhibits exceptional high-temperature stability, chemical inertness, and thermal shock resistance, making it an ideal choice for high-temperature melting, crystal growth, and specialty material synthesis.

 

Calcia-stabilized Zirconia Ceramic Crucible

Advantages of Ceramic Crucible

 

 

Exceptional Heat Resistance

Ceramic crucibles can sustain temperatures that exceed the capabilities of metal containers, often tolerating conditions above 1,000°C and, in some cases, up to 2,000°C or more.

Chemical Inertness

The non-reactive nature of ceramics ensures that samples remain uncontaminated, making crucibles ideal for analytical chemistry, precious metal melting, and high-purity material processing.

Durability

Advanced ceramics are mechanically robust, offering excellent resistance to thermal shock, cracking, and deformation, even after repeated heating and cooling cycles.

Versatility

Available in numerous shapes and sizes, ceramic crucibles can be tailored to specific industry requirements, supporting diverse applications from laboratory analysis to large-scale metal casting.

Cost-Effective Solutions

Compared to precious metal crucibles, many ceramic options—such as alumina and silica—are more affordable while still delivering exceptional performance.

 

Applications of Ceramic Crucible
 

Metallurgy

Melting, casting, and alloying metals such as gold, silver, platinum, copper, and steel. Ceramic crucibles are used in foundries, jewelry manufacturing, and metal recycling operations.

Analytical Chemistry

Performing gravimetric analysis, loss-on-ignition tests, and thermal decomposition studies, where accurate mass measurements are critical.

Material Science and Engineering

Sintering, calcining, and synthesizing advanced materials, ceramics, and composites at high temperatures.

Glass Manufacturing

Melting, blending, and refining specialty glasses, enamels, and pigments—where contamination control is essential.

Research Laboratories

Conducting experiments in earth sciences, solid-state physics, geochemistry, and chemical engineering, often with custom-shaped crucibles for unique research protocols.

Arts and Crafts

Metalwork, enamel, pigment creation, and pottery, where artists require heat-resistant and chemically stable containers.

 

Precautions for Using Ceramic Crucibles

 

Before melting and casting metal, the crucible needs to be preheated in advance to avoid pouring it into objects at the same time. When heated, the mud triangular bracket needs to be supported and heated at the bottom of the pot. After completion, the crucible should not be excessively cold because its strain resistance is poor. If the temperature is too high during the heating process, a sudden temperature drop can pose potential hazards to the crucible.


When adding heating objects to a ceramic crucible, it should be poured slowly and not overfilled. Adequate space should be left to promote air circulation in order to better accelerate the smelting process. If poured too much, it may cause metal to overflow and burst out during the smelting process, and splashing of heated objects may harm workers.


The working efficiency of ceramic crucibles is high. When it is about to dry, it is necessary to strengthen concentration, improve attention, and use waste heat for drying, rather than burning until the crucible is completely dry. The steaming process should be slowly cooled before proper treatment. More importantly, it is important to carefully read the relevant operating instructions to avoid improper operation.

 

Customization Process

 

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Packaging and Shipping

 

Packaging

Carton/Pallet/Wooden case (According to client requirement).

Shipping

We will help you to choose the best shipping way according to your detail requirements. By sea, by air, or by express, etc.

 

 

Our Factory

 

Superior Ceramics Times Technology Co., Ltd. was established in 2005 and has several production plants in Taizhou, Shaoxing, etc. We also have a registered company in the United States, located at 10 ROBIN, IRVINE, CA 92604.

 

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Our Certificates

 

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FAQ

 

Q: What are the properties of a ceramic crucible?

A: They are strong and resistant to melting, high temperatures, acid and alkali, rapid cooling, intense heat, and chemical corrosion. Corundum crucible is a great material for melting samples - it works well for some weakly alkaline materials such as anhydrous Na2CO3, but not for Na2O2, NaOH, etc.

Q: Are ceramic crucibles good?

A: Ceramic materials can exhibit excellent chemical resistance to corrosive substances, depending on their composition. Ceramic crucibles are often preferred for applications involving strong acids, bases, or reactive chemicals that may corrode graphite.

Q: How hot can a ceramic crucible get?

A: Alumina finds most common use given its availability, strong chemical resistance and high melting point above 2,000°C. Silicon carbide is hard with excellent thermal conductivity and extreme temperature resistance capable of withstanding temperatures reaching 2,700°C.

Q: How to clean a ceramic crucible?

A: The method is to heat the empty crucible to a temperature of about 500 degrees Fahrenheit and keep it for 20 minutes; then heat the crucible to red heat and stop heating; let the crucible cool slowly, this process will take away any moisture in the crucible.

Q: Why don't crucibles melt?

A: Crucibles don't melt when holding molten metal because they are made of materials with significantly higher melting points than the metals they contain. Common crucible materials include ceramics, graphite, and certain alloys, all of which can withstand extreme temperatures.

Q: Can you reuse a crucible?

A: In most cases, the majority of ceramic and metallic crucibles and their lids can be reused many times. In order to ensure a long lifetime of proper use, the following cleaning recommendations are are given for the most common crucibles, made of alumina (Al2O3) and platinum (Pt).

As one of the most professional ceramic crucible manufacturers and suppliers, we're featured by quality products and good price. Please rest assured to buy high-grade ceramic crucible from our factory.

ceramic nozzle, , zirconia ceramic beam