When searching for an die casting aluminum alloy that will fulfill the requirements of your project, you might find that different aluminum die casting suppliers do not use the same naming structure for their various alloys. This is something that you should keep in mind. This becomes especially clear when you are looking for die casting aluminum suppliers located in a different nation.

Why is this, and why doesn't there already exist a naming system that is universally accepted? The fact of the matter is that this has been tried in the past. However, in the end, it is difficult to convince nations and organizations to change the way they have been conducting business for a number of years, particularly because they have become accustomed to a particular system.

As a result of this, it is useful to have an understanding of the various ways in which organizations from around the world name aluminum die casting alloys. In this manner, if you are looking for a particular alloy, you will have a better chance of finding it from suppliers who do not use the nomenclature that you are accustomed to seeing.

The Most Commonly Recognized Designations for Aluminum All Over the World

These are some of the die casting aluminum alloy designations that are used the most frequently around the world:

"ANSI/AA," which stands for "The Aluminum Association,"

This designation system is managed by the Aluminum Association (AA), and it is the system that is most widely recognized and used throughout the world. Each alloy is given a four-digit designation by the Aluminum Association, which is preceded by the prefix "AA."This provides the reader with information regarding the primary alloying elements and distinctive properties of a specific grade of aluminum.

Review our article on Aluminum Grades for a more in-depth explanation of the nomenclature system used by the AA:What are the different types of aluminum, and how are they organized into categories?

UNS, which stands for "Unified Numbering System,"

Unified Numbering System is the name of this alloy designation system, which is also the name of a designation system for metals and alloys that is widely accepted in North America. This system's format consists of a one-letter prefix, which is an 'A' for aluminum, followed by five digits in numerical order. The digits could have been selected so that they are comparable to other pre-existing designations, or they could have been chosen so that they provide some information regarding the chemical make-up.

EN stands for "European Norm."

This designation refers to something called the European Norm. It was an effort on the part of the European Union to unify the designations that were already in place in some of their member states, such as Great Britain (GB), Germany (DIN), France (NF), and Italy (UNI), amongst other countries. The format begins with the prefix EN, and then either AC or AW comes after it, denoting whether the alloy was wrought (AW) or cast (AC). At last, die casting aluminum is followed by a four-digit code that resembles that of AA in a manner that is very strikingly similar.


The International Organization for Standardization is commonly referred to as ISO.

This new designation was developed by the International Organization for Standardization (ISO), and it differs significantly from the ones that came before it. The prefix 'AL' is included in the format, and then the full chemical composition of the alloy comes after it. This naming system is helpful in academic settings and research, but it is used in only a limited capacity in practical settings.

An Illustration of the Same Alloy with Several Different Designations

The table that follows gives an example of some different types of aluminum die casting alloys, along with their names in each of the four different designations that we talked about earlier. This will help you see how these designations compare, and it will also help you understand what to look for if you happen to come across these other naming systems while you are searching for a specific alloy for your project.

The alloys AA6061 and AA6063 were selected for this example because they are two of the most widely used alloys for extrusion and also have a high degree of versatility. Both AA2024 and AA7075 are examples of high-strength aluminum die castings alloys that find a lot of use in the aerospace industry.

The final word

When looking for a particular material, it can be difficult to navigate between the various aluminum die casting parts alloy designations that are available. It is my hope that reading this article will help you understand the different names that are given to some of the same alloys, as well as which names you should use when referring to those alloys.