Aerospace series - Steel FE-PL1504 (33CrMoV12) - Air melted - Softened - Forging stock - a or D <kleiner => 300 mm; German and English version EN 3527:2007— 14 стр.
Aerospace series - Metallic materials - General organization of standardization; links between types of EN standards and their use; German version EN 4258:1998— 16 стр.