GOST 2685-75 is a critical interstate standard that specifies the requirements for aluminum casting alloys
| | Type of Alloy (Основной состав сплава) | Examples (Примеры марок) | | :--- | :--- | :--- | | I | Al-Si (Aluminum-Silicon) / Silumins | AL2, AL4, AL4-1, AL9, AL9-1, AL34 (VAL5), AK9 (AL4V), AK7 (AL9V) | | II | Al-Si-Cu (Aluminum-Silicon-Copper) | AL3, AL5, AL5-1, AL6, AL32, AK5M2 (AL3V), AK5M7 (AL10V), AK7M2 (AL14V), AK4M4 (AL15V) | | III | Al-Cu (Aluminum-Copper) | AL7, AL19, AL33 (VAL1) | | IV | Al-Mg (Aluminum-Magnesium) | AL8, AL13, AL22, AL23, AL23-1, AL27, AL27-1, AL28, AL29 | | V | Other Complex Alloys | Composite alloys not falling into the first four categories |
Heavy-load structural components, military and aerospace brackets. AL8, AL13, AL22, AL23, AL27 gost 2685-75 pdf
: Specific percentages of aluminum (Al), silicon (Si), magnesium (Mg), copper (Cu), manganese (Mn), and impurities.
The safest method is purchasing or downloading directly from official standardization bodies, such as the Federal Agency on Technical Regulating and Metrology (Rosstandart) or the relevant national library databases of CIS countries. 2. Online Technical Libraries GOST 2685-75 is a critical interstate standard that
You can review or source official scanned copies, translation indexes, and related historical data packages through regulatory databases such as the RussianGOST Official Regulatory Library or technical index networks like NormaCS .
The primary reason for the continued search for this document is that many products and equipment manufactured before 1990 were certified under the requirements of GOST 2685-75. In the context of maintenance, repair, and operations, engineers and manufacturers often need to revert to the original standard to confirm alloy grades, chemical composition, and mechanical properties for spare parts or when reverse-engineering old components. In the context of maintenance, repair, and operations,
An important point to note is that . It was superseded by GOST 1583-89 (Aluminum casting alloys. Specifications) on January 1, 1990. Later, GOST 1583-89 itself was replaced by GOST 1583-93.
is a former Soviet and interstate standard that established the technical requirements for aluminum casting alloys, including their grades, chemical compositions, and mechanical properties . While it has largely been superseded by more modern standards like GOST 1583-89 , it remains a critical reference for legacy engineering projects, spare part manufacturing, and historical technical documentation. Scope and Technical Requirements
Solution heat treatment followed by full artificial aging to achieve maximum tensile strength. Evolution and the Transition to GOST 2685-93