This stahdad is part of the seiies of EN metallic material standards for aerospace applications. The general
organization of this series is described in EN 4258.
AECMA PREN 2070-7-1987 history
1987AECMA PREN 2070-7-1987 Aerospace Series Aluminium and Aluminium Alloy Wrought Products - Technical Specification - Part 7 - Wrought Forging Stock Edition 1