The majority of Zoro sword replicas in this collection use 1045 carbon steel, with select pieces such as the Yama Enma stepping up to 1060 carbon steel. The difference matters to collectors: 1045 is a dependable mid-range carbon steel that holds finishes well and suits long-term display without surface degradation, while 1060 offers a slightly denser grain structure that can take a more refined polish. Neither is stainless — both are genuine carbon steel alloys, which is why collectors tend to prefer them over cheaper stainless alternatives for display-quality replicas. Carbon steel develops character over time and responds authentically to traditional polishing and oiling care routines.