Graphite Crucibles

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

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.

Leading Manufacturers

Denver, PA  |  717-336-7507

At Weaver Industries, we offer quality graphite machining for parts and products. We provide control at all stages of the manufacturing process, from acceptance of an order, through project products.

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Weaver Industries, Inc. $$$

Harvard, IL  |  800-891-6469

We understand the challenges that are associated with graphite machining and we strive to work closely with your team to ensure quality satisfaction. From milling, grinding, CAD or sanding, we can provide it all.

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Industrial Graphite Sales, LLC $$$

Bethel Park, PA  |  412-831-9400

Ameri-Source is your source for machined graphite products. Our team of dedicated & qualified engineers & sales professionals will do their best to ensure you receive quality.

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Ameri-Source Specialty Products $$$

Maywood, IL  |  708-410-0700

A manufacturer of graphite products, Becker Brothers Graphite Corporation, offers complete graphite machining facilities as well as a wide selection of parts. At our company there is no compromise for quality performance.

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Becker Brothers Graphite Corporation $$$

Calgary, AB  |  403-444-6888

Our goal here at Saint Jean Carbon is to provide you with outstanding and reliable graphite machining. Our graphite products are designed with a number of advantages and we have an extensive background in creating top of the line solutions. If you have any questions about our products then please give one of our representatives.

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Saint Jean Carbon $$$
placeholder image Weaver Industries, Inc. Industrial Graphite Sales, LLC Ameri-Source Specialty Products Becker Brothers Graphite Corporation Saint Jean Carbon

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