The core value of downloading the lies in its detailed chemical breakdown. The standard groups cast aluminum alloys primarily by using the designation "АЛ" (Aluminium Casting / Алюминиевый Литейный) followed by a specific number (e.g., АЛ2, АЛ4, АЛ9). It divides these materials into five unique metallurgical groups : Chemical System Base Common Name / Examples Key Industry Applications Group I Aluminum–Silicon (Al–Si) Silumins (АК9ч / АЛ4, АК7ч / АЛ9)
Tailored high-temperature stability, unique thermal expansion profiles. gost 2685-75 pdf
Grades: AL7, AL19, AL33 (VAL1). These provide high strength at elevated temperatures. The core value of downloading the lies in
Outlines standard heat treatment conditions, such as T2 (annealing) and T5 (aging), to achieve required hardness levels. Grades: AL7, AL19, AL33 (VAL1)
the chemical composition of a specific grade mentioned in the standard. Let me know how I can help you with this technical data. RussianGost|Official Regulatory Library - GOST 2685-75
GOST 2685-75 (ГОСТ 2685-75) is a Soviet-era national standard that specified marks, technical requirements and test methods for aluminium casting alloys. It defined composition limits, mechanical and technological properties, quality requirements for castings, and test procedures. The standard has been superseded by later standards (e.g., GOST 1583-89 and subsequent updates), but it remains relevant for understanding historical classifications, legacy drawings, older foundry practice, and inspection of equipment or parts made under that spec.
Despite being developed over 45 years ago, GOST 2685-75 remains a widely recognized and respected standard in the metal cutting industry. The standard's emphasis on performance, safety, and interchangeability has made it an essential reference for manufacturers, engineers, and researchers worldwide.