GOST / OST Aluminium Alloy Supply: Russian Grades to Drawing

Why Russian-standard aluminium is still specified

A large installed base of aircraft, ships, rail vehicles, military hardware and industrial plant was designed in the Soviet Union and its successor states. Every part on those drawings refers to a Russian grade, a GOST or OST product standard and a Russian temper code. When that equipment is repaired, overhauled or rebuilt, the material on the drawing still governs.

Swapping in a "near equivalent" such as 2024 for Д16 or 7075 for В95 is tempting, and sometimes acceptable for non-critical parts. For certified, fatigue-loaded or welded structures it usually is not. Composition windows differ, impurity limits (iron and silicon in particular) differ, temper definitions differ, and the guaranteed properties in a GOST sheet or plate standard are not the same numbers as ASTM B209 or EN 485-2. A maintenance organisation or design authority normally needs the original grade, or a formal concession, before a substitute can be fitted.

Metline approaches these enquiries as a materials-matching job first and a supply job second. We confirm the exact designation (including Cyrillic suffixes), the governing document and edition, the temper and any cladding, then propose a production route for the flat-rolled form you need. Where a grade cannot be produced economically in a small lot, we say so and set out the closest documented alternative so your engineers can decide.

How Russian aluminium grade names work

Russian wrought aluminium grades are listed in GOST 4784 (the 1997 edition was replaced by GOST 4784-2019). Most grades carry two names: an older letter-and-number name and a four-digit numeric code. Both appear on drawings, often side by side, and you must be able to read either.

The Western grades in the right-hand column are the usual cross-references, not certified equivalents. Composition limits overlap but are not identical.

In the numeric system the leading 1 marks an aluminium base, and the second digit groups the alloy system (for example 11xx Al-Cu-Mg, 13xx Al-Mg-Si, 15xx Al-Mg, 19xx Al-Zn-Mg). Newer alloys developed from the 1960s onward, such as 1163, 1420, 1920 and 1980, were registered with numeric names only, which is why many aerospace and marine drawings show nothing but four digits.

Russian aluminium grades we are asked for most

The grades below cover most of the GOST and OST enquiries we receive. Each is produced to its Russian chemistry; final supply depends on confirming the document, temper, size and quantity.

Other grades we can evaluate on request include Д1, АК4-1, АК6, АК8, В95пч, 1561 (АМг61), 1941, 1943 and the aluminium-lithium alloys 1460, 1461 and 1469. Some of these are rarely rolled outside the original producers, so small lots may require a custom cast. We will tell you at quotation stage whether a grade is practical.

GOST, OST and TU documents that govern supply

A Russian material callout usually names two things: the grade (chemistry from GOST 4784 or a specific OST/TU) and the product standard that fixes dimensions, tolerances, tempers and guaranteed properties. Both must be agreed before production.

GOST documents are interstate standards adopted across many CIS countries; GOST R documents are Russian national standards. OSTs are industry standards from the Soviet ministries (OST 1 for aviation, OST 5 for shipbuilding), and TUs are technical conditions. Older OSTs and TUs can be hard to obtain; if you hold a copy, send it with your enquiry. Our guide to the GOST system explains the hierarchy in more detail.

Product forms and typical size windows

The ranges below are typical of what can be rolled for Russian-standard grades. They are a starting point for quotation, not stock positions; the achievable window depends on the alloy, temper and cladding.

Wide, thin clad sheet and very thick plate in high-strength 7xxx-type Russian grades are the hardest combinations to produce; expect more discussion on those. Cutting to blanks, circles or saw-cut plate pieces is available on request, which helps MRO buyers who need only a few parts per drawing.

Working from old Russian drawings

Many enquiries arrive with nothing more than a photocopied title block. A careful review at the start avoids the most expensive mistake in this field: producing the wrong alloy.

1. Identify the gradeConfirm the Cyrillic designation, its Latin transliteration and any suffix. В93 may appear as V93 or B93 in export papers; Д19ч as D19ch; 1985ч as 1985ch.
2. Identify the documentEstablish which GOST, OST or TU, and which edition, governs the material. Editions change composition limits and property tables.
3. Confirm chemistryCheck composition limits from the document or from a customer-supplied table, including impurity limits that distinguish ч and пч grades.
4. Choose the production routeDecide whether standard rolling stock can be used or whether a dedicated melt and slab is needed before rolling.
5. Fix temper and formAgree temper (М, Н, Т, Т1 and so on), cladding (А, Б, У), thickness, width, length or coil dimensions and surface condition.
6. Agree documentationSet the certificate content, test schedule, batch marking, traceability and any third-party inspection before production.

When can an ASTM or EN grade replace a GOST grade?

Substitution is an engineering decision for the design authority, not the supplier. Our role is to give accurate information on how close two materials are. In general:

Where a substitute is acceptable, we can supply the Western alloy instead, for example 2024 sheet and plate or 7075 plate, and set out the differences in writing for your file.

Where Russian-standard aluminium is used today

Certificates, traceability and inspection

Russian-standard orders are normally inspection-heavy. We agree the document set before production and supply the following as standard or on request:

• Mill test certificate (EN 10204 3.1) showing the GOST grade, governing standard, heat or batch number, chemical analysis and mechanical test results
• Certificate wording in English, with Russian designations reproduced exactly; bilingual layouts on request
• Batch marking on every plate, sheet pack or coil so each piece traces back to the certificate
• Dimensional and visual inspection records; ultrasonic testing of plate where the order calls for it
• Third-party inspection by an agency you nominate, before shipment
• Export packing in seaworthy wooden cases or pallets with moisture protection

Metline holds ISO 9001 certification. We do not issue Russian state conformity certificates (EAC or GOST R certification); where your import process needs them, tell us early so the documentation can be planned with your customs broker.

Russian grade guides and related aluminium

Detailed guides for individual Russian-standard grades:

Background reading and Western alternatives:

Russian GOST / OST aluminium: frequently asked questions