Aerospace series - Steel FE-PL1502 (25CrMo4) - 900 MPa <kleiner => R<(Index)m> <kleiner => 1100 MPa - Sheets, strips and plates - 0,5 mm <kleiner => a <kleiner => 20 mm; German and English version EN 2209:2008— 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.