Technical SpecificationsS515 to S500 cold rolled and softened is the correct material specification for S514 Annealed. To achieve S514 conditions, the S515 will require heat treatment. S515 is a popular material in the aerospace and motorsports industry because of its exceptional ability to offer high resistance and consistent strength. S515 applications include vehicle and aircraft bodywork, and much more. The versatility of this material is a major selling point for many of our customers.