Color Case Hardening

What is Color Case Hardening?

Color case hardening (sometimes referred to as case-hardening, case color hardening, or surface hardening) is one of the earliest ways of hardening steel. The process leaves a hard surface finish and a beautiful layer of colored carbon. While the process is very controlled and the results are predictable, the exact color combination and pattern is unique to each firearm.

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Color Case Hardening Gallery