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Graphite Crucible

Graphite crucible manufacturer and supplies

Graphite Crucible

Graphite crucibles are made of high-purity graphite raw materials, with an ash content of no more than 0.1%. They are mainly used in vacuum furnaces and high-frequency furnaces, or in melting furnaces. Graphite crucibles are used for melting ferrous metals, non-ferrous metals, semiconductors, precious metals, and other metals.  It has good high temperature resistance and can be used in a furnace with a protective atmosphere or a vacuum at a temperature of about 2500 ℃.

Manufacturing Process:

The production of graphite crucibles involves petroleum coke, pitch coke, and coal tar pitch, which function as binders. We mix these components and subject them to milling, pressing, and graphitization to create a blank. Subsequent mechanical processing shapes the product into a crucible.

Artificial Graphite, which doesn’t melt at high temperatures, possesses robust thermal shock resistance. Furthermore, it doesn’t contaminate molten metal and slag or adhere to them, making it the optimal choice for a crucible and boat used in metal melting.

Characteristics of Graphite Crucibles:

Graphite crucible has good thermal conductivity and resistance to high temperature. When subjected to high temperature range, they display a small thermal expansion coefficient and have the specific strain capacity for swift heating and cooling.

Graphite crucible melting point is between 1800 – 3697 °C. These crucibles also possess strong resistance to both acid and alkali solutions, exhibiting remarkable chemical stability. Available in various models and specifications, manufacturers can select the ones that best fit their needs.

Crucially, graphite crucibles don’t react or infiltrate molten metal, ensuring the purity of the molten material.


Graphite Crucibles find extensive use in sectors like metallurgy, casting, machinery, and the chemical industry. They are often employed in smelting alloy tool steel and non-ferrous metals and their alloys, delivering substantial economic benefits.

Based on distinct usage requirements, manufacturers can shape graphite crucibles into four types: conical, cylindrical, irregular, and shaped, tailoring to diverse needs.

Graphite crucible for melting metals Graphite crucible for lithium battery



Tailor-made sizes and capacities

Whether you need smaller crucibles for complex jewelry casting or larger crucibles for industrial-scale operations, our customer service allows you to specify the size and capacity required.

Specialty Coatings and Surface Treatments

We offer a range of specialty coatings and surface treatments to enhance graphite crucibles’ performance and service life. From protective coatings that resist chemical reactions to coatings that prevent metal adhesion, we can tailor the surface properties of our crucibles to meet your specific application.

material selection

Graphite crucibles can be manufactured using different graphite grades, each with its characteristics. Depending on your application, we can help you select the suitable graphite material to meet your requirements. Whether it’s high-purity graphite for sensitive laboratory applications or durable graphite blends for demanding industrial processes, we have the expertise to guide you in selecting the best material.

Quality assurance

As graphite crucibles suppliers, we supply high-quality products and meet customized requirements. Our strict quality control ensures that our custom-designed crucibles meet industry standards and have excellent thermal conductivity, chemical resistance, and mechanical strength.

China UHP/HP/RP Graphite Electrode Supplier For Electric Arc Furnaces, Ladle Refining Furnaces and Submerged Arc Furnaces