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Graphite Crucibles

A reliable source for Machined Graphite information and leading Machined Graphite Companies & Suppliers.

Crucibles are thick, cup-like containers that come in many different shapes and sizes and are widely used in applications from industrial to chemical, commercial to residential. They can be fabricated with or without a removable lid and occasionally with a spout, which eases the pouring process. Read More…

Graphite Crucibles Graphite crucibles are heat resistant containers that store materials and samples for various high temperature applications.
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Leading Manufacturers

Denver, PA  |  717-336-7507

At Weaver Industries we specialize in manufacturing machined graphite parts and products. Our goal is to ensure that our customers get the right tools for their applications. We are leaders in the industry for our graphite machining processes which include recycling and reclaiming machined electrodes. Custom molded urethane and high quality carbon graphite are only a few of our other capabilities.

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Weaver Industries, Inc. $$$

St. Marys, PA  |  814-781-1573

Morgan Advanced Materials & Technologies provides machined graphite, carbon graphite and graphite composite in a variety of forms, including bearings, seal rings, rotary vane compressors and meters, high-temperature parts, glass-handling parts and continuous casting products.

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Morgan Advanced Materials & Technologies, Inc. $$$

Schaumburg, IL  |  800-703-0718

3D Graphite & Machining is known for our premium quality machined graphite. For over 40 years we have been known worldwide for our high-quality reputation. We offer a variety of products, including custom-cut, billet, and pre-machined and finished machined parts. Customer satisfaction is our primary concern. Industries we serve include power generation, medical, die/mold, and aviation/aerospace.

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3D Graphite & Machining $$$

Bellmawr, NJ  |  800-210-5000

At Mercer Gasket & Shim we are committed to continually improving our efficiency and effectiveness in order to better serve our customers. We pride ourselves on speed & flexibility, offering 24-hour service & 100% on-time delivery. Our systems are created to be tailored to the needs of each customer.

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Mercer Gasket & Shim $$$

Menomonee Falls, WI  |  888-560-7744

Schunk Carbon Technology manufactures a wide range of carbon graphite, graphite, metal graphite, resin bonded graphite products, and more. We produce material for electrotechnical, mechanical, and thermal applications. Our business was founded in 1978.

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Schunk Carbon Technology, LLC $$$

Asbury, NJ  |  908-537-2155

Asbury Carbons is one of the world's largest processors and merchants of graphite in all forms. We offer graphite machining and graphite products such as graphite blocks, plates and rounds for markets, including fuel cells, sealing materials, powdered metallurgy, friction products and more. Visit our website or call our friendly customer service team, we are ready to help.

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Asbury Carbons $$$
placeholder image Weaver Industries, Inc. Morgan Advanced Materials & Technologies, Inc. 3D Graphite & Machining Mercer Gasket & Shim Schunk Carbon Technology, LLC Asbury Carbons

In terms of structure, graphite crucibles may be barrel, cylinder or conical shaped, wide-form with a shallow, low profile, or high-form, with high, tapered walls. Crucibles are made of metals like copper, platinum, quartz or porcelain, but graphite is a cost saving alternative to these more expensive materials. Graphite is a chemically inert, temperature resistant mineral that fares well in ovens and furnaces. It resists thermal shock, oxidation and abrasions well, and won’t melt, burn or chemically change in extreme conditions.

It is able to maintain its structure and form even at temperatures as high as 5000°F and so can be used in furnaces and high heat processes. Graphite crucibles have many applications within the foundry, laboratory testing, jewelry making, plumbing fixtures, valves, sprinklers, and other heavy-duty products. They are further used in chemical analysis, to store materials and samples during fusion and mixing processes, in ash content determination, to melt precious metals, and in foundries to melt many different metals.

The graphite used for the fabrication of graphite crucibles or other graphite products may be regular or high purity. Even less pure graphite mixtures still usually contain a high percentage of graphite, which is often mixed with clay; however the crucible does undergo high purification before being used in a process. Crucibles of any size or material are measured in milliliters and they are always portable and handled with tongs and great care. Most crucibles, unless specifically designed, have a smooth surface and they are all dark grey or black in color.

To eliminate the risk of cross-contamination and a difficult cleaning process, many graphite crucibles are one-time-use disposable products. Due to it being mixed with clay, the temperature limits of most graphite crucibles are lowered, as it the durability. After graphite reaches its maximum temperature, it tends to start slowly oxidizing and if left in a furnace too long, may erode and cause contamination.

Graphite crucibles are not very porous, and won’t absorb much of the material being held. Many sizes are available, and they may be custom made to fit certain manufacturing requirements for a higher cost, or come in standardized sizes. The machined graphite is mixed with refractory clay, grog and other additives, and then formed into the crucible shape by extrusion or die casting, and heat treated in an oven where strengthening takes place.

Graphite Crucibles Informational Video

 
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