Yes, 1095 steel is commonly used in the production of clay tempered katana blades. Clay tempering, also known as differential hardening, is a traditional Japanese technique used to enhance the performance and aesthetics of katana swords.

During the clay tempering process, a layer of clay is applied to the blade before it is heated and quenched. The clay acts as an insulator, causing different cooling rates during the quenching process. This results in a blade with a hardened edge (yakiba) and a softer, more flexible spine (mune), creating a distinct hamon line between the two areas.

1095 steel is well-suited for clay tempering due to its high carbon content and ability to achieve high hardness. When properly heat-treated and clay tempered, a katana made from 1095 steel can exhibit the following characteristics:

1. Hardness and Edge Retention: The hardened edge of a clay tempered 1095 katana can hold a sharp edge for extended periods, allowing for effective cutting and slicing.
2. Flexibility and Toughness: The softer, more flexible spine of the blade provides resilience, allowing the katana to absorb shocks and impacts without breaking. This flexibility enhances the overall durability and performance of the sword.
3. Aesthetics: Clay tempering creates a visually appealing hamon pattern, which is highly valued in traditional Japanese swordsmithing. The hamon line, along with the visible grain pattern (hada) resulting from folding and forging, adds to the overall beauty and authenticity of the katana.

It's worth noting that the success of clay tempering depends not only on the choice of steel but also on the skill and expertise of the swordsmith. Proper control of the clay application, heat treatment, and quenching processes are essential to achieve the desired results.

If you are considering a clay tempered katana made from 1095 steel, it's important to research and select a reputable swordsmith known for their expertise in this specific forging and tempering technique. A well-crafted and properly clay tempered katana can offer exceptional cutting performance, durability, and aesthetic appeal.