Hardness

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Hardness

</dt>
Resistance of metal to plastic deformation usually by indentation. However, the term may also refer to stiffness or temper, or to resistance to scratching, abrasion, or cutting. </dd>
Indentation hardness may be measured by various hardness tests, such as Brinnell, Rockwell, and Vickers. </dd>

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use