Alumina Crucibles

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Pure alumina is a refractory material, meaning that it can withstand extremely high temperatures without breaking down. Alumina’s melting point is approximately 3760°F. A form of alumina, aluminum oxide, is frequently used to make crucibles. Read More…

Alumina Crucibles An alumina crucible is a type of crucible made from alumina, also called aluminum oxide, which is the same material used to produce aluminum metal. The ceramic form of alumina is frequently employed for production of alumina crucibles because of its strength, low cost and ability to withstand temperatures upwards of 3272°F.

Leading Manufacturers

Myrtle Beach, SC  |  609-397-8330, 609-397-8341

As a manufacturer and stocking distributor of industrial and technical ceramics, LSP carries the most diversified inventory of ceramic tubes, spacers, bushings, etc. in the industry. Our teams aim to exceed your expectations and our high performance solutions are very cost efficient. If you have any questions then feel free to visit our website or give us a call today!

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LSP Industrial Ceramics, Inc. $$$

Pittsburgh, PA  |  412-406-7171

C-Mac International, LLC is a custom ceramics supplier. We provide advanced ceramic component parts manufacturing for a variety of industries and provide solutions to many ceramic needs. Our company specializes in Alumina, Steatite, Cordierite, Zirconia, and MgO. For all your ceramic needs or a free price quote, call C-Mac International, LLC today!

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C-Mac International, LLC $$$

Quakertown, PA  |  215-536-3500

Insaco provides custom grinding and machining services to fabricate precision parts from sapphire, quartz, and most technical ceramics including alumina, zirconia, silicon carbide, silicon nitride, aluminum nitride, and others. Engineers are available to discuss material options/alternative recommendations, as well as design concepts to help our customers minimize fabrication costs. Since 1947 Insaco has enjoyed an extremely strong reputation for reliably meeting the toughest grinding and machining requirements in working with these difficult materials.

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Insaco Inc. $$$

Fremont, CA  |  510-249-9700

Years of experience have created unique specializations and expertise of our engineering and product consultation team. Applied Ceramics has a proven track record in creating the highest quality products for semiconductor processing equipment, automotive ceramics, cutting tools and many other industrial ceramics. We’ve machined products for industries such as aerospace/aviation, medical, nuclear, and more, but can produce products from high-end materials for all relevant enterprises.

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Applied Ceramics $$$

Atlanta, GA  |  770-448-6888

Our Versagrid® honeycomb ceramic products are custom made to your specifics. Applied Ceramics provides product in mullite, fused silica, cordierite, activated carbon and alumina ceramics. As ceramic manufacturers, our cell density runs 4-400 cells psi. We’ve been in business since 1967. Contact us.

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Applied Ceramics, Inc. $$$

Holbrook, MA  |  781-961-5297

Ceramics machining and much more is what you will find at Mica-Tron Products. We have the ability to machine intricate parts in a wide variety of materials. In our state-of-the-art facility, we are able to offer single prototypes to large runs of thousands. Excellence in quality since 1959.

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Mica-Tron Products Corp. $$$

Tucson, AZ  |  520-547-0850

Since our founding in 2001, as an AS 9100 certified aerospace research and development company, Advanced Ceramics Manufacturing we have become a leader in the production of ceramic components, custom ceramic fabrication and water soluble molds and tooling. We specialize in aerospace composites. Within our state of the art facility, we have an autoclave, wet-lab, metrology lab, ceramic firing ovens, QC lab, and two composite clean room.

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Advanced Ceramics Manufacturing $$$
placeholder image LSP Industrial Ceramics, Inc. C-Mac International, LLC Insaco Inc. Applied Ceramics Applied Ceramics, Inc. Mica-Tron Products Corp. Advanced Ceramics Manufacturing

Aluminum oxide is industrially refined from bauxite ore, which contains aluminum. Following multiple purification processes, a substance called calcined alumina is extracted, which contains mostly alumina with some impurities, primarily sodium oxide.

Conical Alumina Crucible and DiscConical Alumina Crucible and Disc - LSP Industrial Ceramics, Inc.

Unfortunately, the less pure the alumina, the lower its resistance to heat. For this reason, high-purity alumina is preferred, especially in industrial laboratories. This type of alumina can be made using a similar process to calcined alumina.

The heat resistance of alumina crucibles is an especially important feature because they are used in chemical laboratories as containers for extremely hot chemical compounds. Alumina crucibles have applications in laboratory research, academia and industry and come in a wide variety of shapes and sizes. For example, high-form alumina crucibles are commonly used in academic laboratories.

These crucibles, which are often used to melt or heat chemicals over a Bunsen burner or in an oven, look like a deep, narrow cup. Commercially, high-form crucibles come in rectangular or cylindrical form. Other crucibles used in academic or research laboratories are usually small, with a diameter less than the size of an adult human hand, adequate for the small amount of chemicals they are required to hold.

All smaller crucibles are used with a lid made out of the same material, and are handled with tongs and gloves to prevent burning or other accidents.

Industrial alumina crucibles, which may be used for melting metals and creating alloys, can be much larger and require installation in the furnace with sufficient space and exterior support for use.

Alumina Crucbiles Informational Video