DIN EN 3491:2007-04
Действует
Aerospace series - Steel FE-PM3901 (X15CrNi17-3) - Air melted - Hardened and tempered - Forgings - D<(Index)e> <kleiner => 100 mm - 900 MPa <kleiner => R<(Index)m> <kleiner => 1100 MPa; German and English version EN 3491:2006
— 14 стр.