How does T10 steel differ from 1045 or 1060 in a tanto blade?
Updated Mar 2026
T10 is a tool steel with a small addition of tungsten (roughly 0.9–1.2%), which increases wear resistance and allows the steel to hold a finer grain structure compared to plain carbon steels like 1045 or 1060. The practical difference for collectors is that T10 responds particularly well to differential hardening — a clay-coating process that creates a softer spine and harder edge, resulting in a visible hamon (temper line) along the blade. This hamon is a natural byproduct of the hardening process, not an etched or artificial effect, making each blade's temper line uniquely patterned. By contrast, 1045 and 1060 are medium-to-high carbon steels valued for their reliability and ease of consistent production. 1060 produces a slightly harder edge than 1045. Neither typically shows a pronounced hamon without differential heat treatment. For collectors who prioritize visible metallurgical detail and surface artistry, T10 offers a level of blade character that plain carbon steels rarely match.