How should I maintain and store a Damascus steel katana?
Updated Mar 2026
Damascus steel requires more attentive care than stainless steel because its carbon-bearing alloys are susceptible to oxidation. After handling, apply a light coat of choji oil or a food-grade mineral oil to the blade surface using a soft, lint-free cloth, paying attention to the etched texture where moisture can settle. Store the katana horizontally on a display stand or in its saya with the edge facing upward, in a climate-controlled environment away from direct sunlight and humidity fluctuations. Avoid storing blades in leather sheaths for extended periods, as leather can trap moisture. Inspect the blade every few months, especially in humid climates, and re-oil as needed. The saya itself — whether lacquered hardwood or rosewood — should be kept away from extreme dryness that could cause the wood to crack or warp.