Case Hardening (Surface Hardening)

Case hardening is type of Hardening Technique.

Case hardening is Heat Treatment process which is use to harden the upper layer of material while allowing inner layer soft.

Upper layer is become harder as per material requirement.

In this process, only upper layer become harder so this process is also known as Surface Hardening Process.

Case hardening process is use to harder top layer or limited depth from top layer.

Types of Case or Surface Hardening Process:

Carburizing
Cyaniding
Nitriding

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