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From Wikimedia Commons, the free media repository. File information. Structured data. Captions English Add a one-line explanation of what this file represents. Summary [ edit ] Description Essai jominy. The quenching vs to the distance to cooled side thus vs the cooling speed is evaluated by Rockwell hardness.
The spherical prints on the flat right symbolize the marks of the Rockwell test. I, the copyright holder of this work, hereby publish it under the following licenses:. You may select the license of your choice. The quenching vs to the distance to cooled side thus vs the cooling speed is evaluated by Rock. You cannot overwrite this file. The following other wikis use this file: Usage on de.
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The hardenability of a metal alloy is the depth to which a material is hardened after putting it through a heat treatment process. It should not be confused with hardness , which is a measure of a sample's resistance to indentation or scratching. When a hot steel work-piece is quenched , the area in contact with the water immediately cools and its temperature equilibrates with the quenching medium. The inner depths of the material however, do not cool so rapidly, and in work-pieces that are large, the cooling rate may be slow enough to allow the austenite to transform fully into a structure other than martensite or bainite. This results in a work-piece that does not have the same crystal structure throughout its entire depth; with a softer core and harder "shell".