DIN EN 3491 : 2007 Title: Aerospace series - Steel FE-PM3901 (X15CrNi17-3) - Air melted - Hardened and tempered - Forgings - D<(Index)e> 100 mm - 900 MPa R<(Index)m> 1100 MPa; German and English version EN 3491:2006 Year: 2007 Publisher: DIN Media GmbH Availability: Within 1-2 working days