How does T10 steel differ from 1045 on a collectible tanto?
Updated Mar 2026
1045 carbon steel contains roughly 0.45% carbon, making it a reliable and forgiving steel for display-grade blades - it holds its shape well and takes a clean polish. T10 tool steel steps up to approximately 1.0% carbon content, which allows for a harder edge geometry and, critically, makes it compatible with clay tempering. Clay tempering is the process of applying an insulating clay coat to the blade spine before quenching, which causes the edge to cool faster and produce a visible hamon - the wavy temper line that is one of the most visually prized features in Japanese swordsmithing. For collectors who want both the aesthetic detail of a hamon and a blade with higher carbon integrity, T10 clay-tempered tanto represent a meaningful step above 1045 in the display hierarchy.