Why are bronze fittings used instead of iron or steel on these katana?
Updated Mar 2026
Bronze — an alloy of copper and tin — has been used in Japanese sword fittings since the Kofun period, long before iron tsuba became standard. Its appeal for collectors is both historical and aesthetic: bronze develops a distinctive warm patina over time that iron cannot replicate, and it accepts engraved detail work with exceptional clarity due to its relative softness compared to hardened steel. On these katana, bronze fittings like the tsuba, habaki, and fuchi-kashira create a visual warmth that complements lacquered saya in golds, blacks, and deep blues far more harmoniously than a cold steel fitting would. For display pieces, that tonal coherence between fittings and saya is a meaningful design consideration.