Tool steel ground flat stock O1 is a type of oil-hardening steel that is commonly used in the production of cutting tools, dies, and punches. It is known for its excellent toughness, wear resistance, and machinability.

O1 tool steel contains about 1% carbon and 0.5% chromium, which give it good hardness, wear resistance, and dimensional stability. It is an oil-hardening steel, which means that it is hardened by cooling it in oil instead of quenching it in water.

Tool steel ground flat stock O1 is a precision-ground material that is used for making precision components and parts, such as machine parts, tooling, and dies. It is available in various thicknesses and widths, and can be cut to custom lengths to meet specific requirements.

When working with O1 tool steel ground flat stock, it is important to use proper safety precautions, including eye and ear protection, as well as gloves and other protective gear, as the steel can be quite hard and brittle. It is also important to keep the steel cool during machining and to use appropriate cutting tools and lubricants to prevent damage to the steel and the tools.

To maintain the optimal performance of O1 tool steel ground flat stock, it should be annealed after machining or grinding to prevent cracking and distortion. The steel can also be hardened by heating it to a specific temperature and then cooling it in oil.