GJB 1057-1990
LC9 aluminum alloy over-aging forgings (English Version)

Standard No.

GJB 1057-1990

Language

Chinese, Available in English version

Release Date

1991

Published By

Military Standard of the People's Republic of China-General Armament Department

Status

Be replaced 2021-03

Replace By

GJB 1057A-2020

Latest

GJB 1057A-2020

GJB 1057-1990 history

• 2021 GJB 1057A-2020 Specification for over-aging forgings of aluminum alloys for aerospace applications
• 1991 GJB 1057-1990 LC9 aluminum alloy over-aging forgings