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Usage and Classification of Crucibles

Jan. 13, 2022

A crucible is a vessel in which metallic elements are melted to cast new objects or make new alloys. Crucibles are traditionally made of ceramic materials and can withstand very high temperatures. They can also be made of steel or iron to melt softer metals. DINOR produces custom copper crucibles and we present to you some of its features and uses.


Crucibles have been used for thousands of years to make alloys and cast metals. To melt metal in a crucible, the material is placed inside the crucible and heated until it reaches its melting point. You can make new alloys by melting the material in the crucible in combination with other elements.

Melting materials is also an effective way to recycle waste materials. Metals are among the most recyclable materials in the world because they can be easily cast into new objects or combined into new alloys.


When a crucible is used, one usually places the crucible lid diagonally over the crucible to prevent the heated material from jumping out and to allow air to enter and exit freely for possible oxidation reactions.

The crucible, because of its small bottom, usually needs to be set up on a clay triangle in order to be heated directly by fire. The crucible can be placed on an iron triangle in either a square or diagonal position, depending on the needs of the experiment.

The crucible should not be placed on a cold metal table immediately after heating in order to prevent it from breaking due to rapid cooling. Nor should it be placed on a wooden tabletop immediately to avoid burning the tabletop or causing a fire. The correct method is to leave it on an iron triangle to cool naturally or to place it on an asbestos net to cool slowly.

Usage and Classification of Crucibles

Customization Processing Red copper Crucibles


Ceramic Crucible

Ceramic crucibles are made of kiln-fired clay and are stable at high temperatures. They have been used for metal processing for more than 7,000 years. Modern ceramic crucibles are often made of clay and graphite to ensure durability.

Clay-Graphite Crucibles

Graphite crucibles are primarily used for casting nonferrous and ferrous metals because they are non-reactive and can withstand extremely high temperatures.

Silicon Carbide Crucibles

The most commonly used silicon carbide crucibles in modern laboratories can withstand extremely high temperatures and are not chemically reactive, providing contamination-free results.

Steel Crucibles

Steel crucibles are used to melt metals with low melting points such as aluminum and zinc. They are inexpensive and easy to use. However, they can easily scale and flake, which can contaminate your final alloy.

If you would like to know more, please do not hesitate to contact us. DINOR also has mmo titanium anode wire for sale. With many years of manufacturing experience, we offer you a one-stop service and many solutions.