The collection features two primary steel types: high manganese steel and 1045 carbon steel. High manganese steel is notable for its toughness and bright, polished surface finish - qualities that make it visually striking under display lighting. The 1045 carbon steel variants offer a denser grain structure and a warmer tonal finish after heat treatment. Both are formed with full-tang construction, meaning the steel runs continuously from blade tip through the handle, providing the authentic weight distribution and structural solidity that experienced collectors look for in a quality replica.