What carbon steel grades are used in tanto swords and how do they compare?
Updated Feb 2026
Carbon steel tanto swords in this collection use two primary grades that offer different performance characteristics at different price points. 1045 carbon steel has approximately 0.45% carbon content, making it a tough and workable grade that is widely used for accessible tanto collectibles. It can be properly heat-treated for a good baseline hardness, provides reliable full-tang construction, and produces a consistent blade surface appropriate to a well-made entry-level tanto. T10 carbon steel is the premium grade: its carbon content is more precisely controlled and its grain structure finer than 1045, allowing for the differential heat treatment that produces a visible hamon temper line. T10 clay-tempered tanto are the pinnacle of the carbon steel tanto category for collectors who prioritize blade character over price accessibility. Both grades are genuine high-carbon steel appropriate to quality Japanese-style sword construction, and both are used with full-tang construction and mekugi retention pins throughout the collection.