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Global Aluminum Alloy Conversion Chart

Updated : Apr. 14, 2023

Aluminum alloy is a widely used material in fields such as construction, automotive, aerospace, packaging, etc., and the designation standards for aluminum alloy varies in different countries and regions, which brings certain difficulties to the application, communication, and purchase of aluminum alloy.

In order to help customers solve this problem, Chalco has compiled a commonly used international aluminum alloy grade cross-reference table. This standardized tool may help you choose the products in a quick and convenient way.

globle aluminum alloy grade

Global aluminum alloy grade cross-reference chart

Types China USA UK Japan France Germany Former Soviet Union
Industrial pure aluminum 1A99 1199 A199.99R A99
1A97 A199.98R A97
1A95 A95
1A80 1080(1A) 1080 1080A A199.90 A8
1A50 1050 1050(1B) 1050 1050A A199.50 A5
Rust-proof aluminum 5A02 5052 NS4 5052 5052 A1Mg2.5 Amg
5A03 NS5 AMg3
5A05 5056 NB6 5056 A1Mg5 AMg5V
5A30 5456 NG61 5556 5957
Hard aluminum 2A01 2036 2117 2117 AlCu2.5Mg0.5 D18
2A11 HF15 2017 2017S AlCuMg1 D1
2A12 2124 2024 2024 AlCuMg2 D16AVTV
2B16 2319
Wrought aluminum 2A80 2N01 AK4
2A90 2218 2018 AK2
2A14 2014 2014 2014 AlCuSiMn AK8
Super-high strength aluminum 7A09 7175 7075 7075 AlZnMgCu1.5 V95P
Casting aluminum alloy ZAlSi7Mn 356.2 LM25 AC4C G-AlSi7Mg
ZAlSi12 413.2 LM6 AC3A A-S12-Y4 G-Al12 AL2
ZAlSi5Cu1Mg 355.2 AL5
ZAlSi2Cu2Mg1 413 AC8A G-Al12(Cu)
ZAlCu5Mn AL19
ZAlCu5MnCdVA 201
ZAlMg10 520.2 LM10 AG11 G-AlMg10 AL8
ZAlMg5Si G-AlMg5Si AL13

Aluminum alloy grade designation standards

ANSI/AA (The Aluminum Association)

AA stands for Aluminum Association and is a widely recognized aluminum designation system around the world. It is designated by the prefix AA, followed by four numeric digits.

  • first digit: principal alloying constituent(s)
  • second and third digits: specific alloy designation (number has no significance but is unique);
  • fourth digit: Casting (0) or ingot (1, 2) designation.

UNS (Unified Numbering System)

UNS stands for Unified Numbering System. This system is popular in the United States. It is a unified identification for metals and alloys of metals.

In this system, the names of metals and alloys of metals consist of a single-letter prefix followed by five digits representing a materials composition. In most cases the letter is suggestive of the family of metals identified.

For aluminium, the prefix letter is A – for aluminum.

ISO (International Organization for Standardization)

The International Organization for Standardization created this designation, and it is pretty different from the previous ones.

The naming system uses the letters Al as prefix, followed by the chemical composition of the alloy.

This naming system is helpful in academia and research but is seldom used in practical endeavors.

EN (European Norm)

EN stands for European Norm. This standard is usually used in EU countries, such as Great Britain (GB), Germany (DIN), France (NF), and Italy (UNI) among others.

The format includes the prefix EN, followed by AC or AW, depending on if the alloy is wrought (AW) or cast (AC). Finally, it is followed by a four-digit code.

For aluminum, this standard's designation involves the prefix EN AW (wrought alloys) and AC (cast alloys), followed by four digits, with the first digit representing the parent alloying element.

DIN (Germany)

DIN-Deutsches Institut für Normung eV(German Institute for Standardization). This standard uses the letter DIN followed by an alphanumeric code or figures representing the chemical composition to name aluminum and aluminum alloys.

BS (Great Britain)

BS is for the British standard and developed by the British Standard Institute. This standard use alphanumeric characters to represent aluminum alloy. The alphabet represents main alloying element, and the figures represent the weight percent of the main alloying element.

AFNOR (France)

AFNOR is a France organization, Association Française de Normalisation, means French Standardization in English. Aluminum alloys are named using an alphanumeric system in which the first letter, A, designates the name of the element, and the ensuing letters and numbers designate the alloying elements and their percentages.

UNE (Spain)

UNE is a Spain organization, Asociación Española de Normalización, means Spanish organization for standardization. In this system, the alloys are designated by a single letter prefix, followed by a four digit number specifying chemical composition.

JIS (Japan)

JIS represents for Japanese Industrial Standard, developed by the Japanese Industrial Standards Committee (JISC) in Tokyo. Start with the prefix JIS, followed by the letter A representing the divided area, and then follow by four digits representing the material composition.

CSA (Canada)

CSA stands for Canadian standards association. The CSA system of naming aluminum alloys employs alphanumeric codes which depict the composition and class of the alloys.

SIS (Sweden)

SIS stands for Swedish Institute of Standards, the official standards organization in Sweden. This system names Aluminium alloys by using a four-digit numbering system that describes the main alloying element and its composition.

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