Why is height carbon steel used for the manufacture of the main part of the file?

High carbon steel is used for manufacturing the main part of files due to its ability to achieve a hard and durable edge after heat treatment. The high carbon content allows the steel to be hardened significantly, resulting in a surface that can effectively cut and shape materials. Additionally, this type of steel offers good wear resistance, ensuring that files maintain their cutting performance over time. Overall, high carbon steel provides the necessary hardness and durability for efficient and long-lasting use in filing applications.