What steel is used in these Yubashiri replica blades?
Updated Mar 2026
These Yubashiri replicas are forged from 1045 carbon steel, a medium-high carbon alloy containing approximately 0.45% carbon by weight. This composition gives the blade a good balance of hardness and visual polish, producing a surface that holds a clean, mirror-adjacent finish well-suited to display. Compared to stainless steel - commonly used in lower-tier replicas - 1045 carbon steel has a more authentic appearance under light and a denser, more substantial feel when handled. The tradeoff is that carbon steel requires occasional light oiling to prevent surface oxidation, but this minimal maintenance routine is standard practice among serious collectors.