Precise percentages of aluminum, silicon, copper, magnesium, and other elements for each grade. Mechanical Properties:

For engineers and manufacturers requiring a PDF of this standard, it is essential to access it through reputable libraries or archival platforms, while always deferring to the current GOST 1583-93 for active production and compliance needs.

In the dimly lit archives of a forgotten Soviet design bureau,

You can search for the GOST 2685-75 standard on various online platforms, such as:

: Used for complex, sealed, and thin-walled structural parts. 2. AL9 (AЛ9) System : Al-Si-Mg