CSN EN 2502 This document specifies the requirements relating to: Steel X5CrNoMoCuNb14-5 (1.4594) 930 MPa <= Rm <= 1 080 MPa Bars De <= 150 mm for aerospace applications. ASD-STAN designation: FE-PM66. Original English text of CSN EN Standard. The price of the Standard included all amendments and correcturs.