T10 steel is not traditionally used for crafting katana blades. While T10 steel has its own merits, it is not a commonly employed material for making traditional Japanese swords.

The preferred steel for crafting traditional katana blades is tamahagane, a specific type of steel produced through a labor-intensive smelting process involving iron sand and charcoal. Tamahagane has distinct properties that contribute to the unique characteristics of a katana, such as a hard cutting edge (ha) and a flexible spine (mune).

That said, T10 steel can still be used for creating a sword, including a katana, with satisfactory results. T10 steel is a high-carbon steel known for its hardness, toughness, and edge retention. When properly heat treated and crafted by an experienced swordsmith, a T10 steel katana can exhibit desirable properties for cutting and handling.

However, it's important to note that the selection of steel for a katana depends on various factors, including the intended use of the sword, the desired performance characteristics, and personal preferences. If you are considering a T10 steel katana, it is recommended to consult with experienced swordsmiths or experts who can provide insight into the specific design, heat treatment, and quality of the blade to ensure its suitability for your intended purpose.