2020UNE-EN 2516:2020 Aerospace series - Passivation of corrosion resisting steels and decontamination of nickel base alloys (Endorsed by Asociación Española de Normalización in February of 2020.)
1997UNE-EN 2516:1997 AEROSPACE SERIES. PASSIVATION OF CORROSION RESISTING STEELS AND DECONTAMINATION OF NICKEL BASE ALLOYS.