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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.
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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.

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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.

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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.

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Insaco Inc. $$$

Fremont, CA  |  510-249-9700

Applied Ceramics is a fabricator of custom-made ceramic parts designed for semiconductor, solar, fuel cell, oil drilling, nuclear, and numerous other industries. Materials include ACI-995 Alumina, Zirconia, and more. Our extensive experience with precision designs supported by our team of specialists ensures that our customers have the ideal solution to meet the needs of their application. To get started, contact us today!

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Applied Ceramics $$$

Newark, NY  |  888-285-5994

Refractron partners with companies that have fluid control applications requiring plug, seat, ball & seat or check ball components to name a few and that require a lower cost, strong, tough product of low wear. We manufacture ceramic plungers for high pressure pumps and waterjet cutting. Our aquaculture diffusers are custom manufactured in the shape of discs, plates or tubes constructed from glass-bonded silica, porous alumina or silicon carbide.

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Refractron Technologies Corp. $$$

Hubertus, WI  |  800-869-2008

Technical Products, Inc. has been manufacturing and distributing a wide variety of ceramics for 30 years. We are capable of meeting the demands of our constantly changing industry with our modern, fully equipped facility. We can produce prototypes as well as full production orders. Visit our website to learn more about our ceramic manufacturing capabilities.

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Technical Products, Inc. $$$
placeholder image LSP Industrial Ceramics, Inc. C-Mac International, LLC Insaco Inc. Applied Ceramics Refractron Technologies Corp. Technical Products, Inc.

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

 

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