What makes T10 steel a good choice for a collectible tanto?
Updated Mar 2026
T10 carbon steel is valued in the collector market primarily for two reasons: its response to clay tempering and its edge retention. With roughly 1.0% carbon content and trace tungsten, T10 develops a hard edge zone during quenching while the spine remains more flexible - a balance that high-carbon steels without tungsten don't always achieve as consistently. For display and collection purposes, the most visible result of this is the hamon, the temper line along the blade. On a properly clay-tempered T10 tanto, that hamon is a genuine metallurgical feature with visible activity - nie crystals, misty transitions - not an etched pattern applied to a uniformly hardened blade. That authenticity is exactly what knowledgeable collectors look for when evaluating a piece's long-term value.