Is the red color on the blade a coating or part of the steel itself?

 Updated Mar 2026

The red surface is achieved through a controlled heat and chemical surface treatment process applied directly to the manganese steel — it is not a spray paint or lacquer coating applied over the metal. The treatment causes a deliberate, uniform oxidation layer to form on the blade surface, creating the crimson tone while simultaneously sealing the steel against further uncontrolled oxidation. This is an important distinction for collectors: a treated surface like this one is integrated into the steel's outermost layer, meaning it will not chip or peel under normal display conditions. Standard maintenance — a light wipe with a silicone cloth or a thin application of camellia oil every few months — is sufficient to preserve the finish and prevent any humidity-driven surface changes.

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