MANUFACTORY
MANUFACTORY
COLOUR CASE HARDENING
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created on steel surfaces with the aid of leather carbon. The purely empirical experience of Suhl colour case hardening has been handed down from generation to generation. Even today, the chemical and physical processes of colour case hardening have not been completely researched. The wide range of influencing factors make every result unique. With colour case hardening, a steel surface is hardened by enrichment with carbon. The play of colours ranges from blue to brown and yellow to different shads of red. The steel surface is heat treated: leather carbon releases tannic acid, which produces the individual colours. Merkel leather carbon for colour case hardening is produced according to an old formula – a modern paint coating of the resultant fine surfaces offers additional corrosion protection and assures the finished surface lasts. This tradition is permanent.
Colour case hardening with the gunsmith – certified Suhl production.