Case Hardening

Hardening a ferrous alloy so that the outer portion, or case, is made substantially harder than the inner portion, or core.

Typical processes used for case hardening are:

The surface layer absorption of carbon, nitrogen or a mixture of the two creates a concentration gradient.


See also: Carbonitriding, Carburizing, Cyaniding, Flame Hardening, Induction Hardening, Nitrating, Nitriding.

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Subjects: Mechanical Engineering