This standard defines a method to determine constant amplitude fatigue data of metallic materials and the S-N curve (or Wöhler curve). It has been prepared by ASD-STAN, Technical Section Metallic Materials, with the participation of German experts of the Aerospace Standards Committee. The European Committee for Standardization (CEN) declared the Aerospace and Defence Industries Association of Europe (ASD-STAN) responsible for the preparation of European standards (EN) for the field of aerospace. ASD became the associated body (ASB) of CEN by the agreement dated 1986-10-03. The responsible German standardization committee is Working Committee NA 131-01-01 AA "Stähle" ("Steels") of the Aerospace Standards Committee at DIN.