ThePipingMart Blog Grades SAE AMS 2759/2 Alloy Steel – Composition, Properties, and Uses

SAE AMS 2759/2 Alloy Steel – Composition, Properties, and Uses

AMS 2759/2

AMS 2759/2 is standard for heat treatment of nonferrous alloys used in various industries, including aerospace, defence, and medical. The standard outlines the specifications for the heat-treated material’s physical and mechanical properties, such as hardness and microstructure. Understanding AMS 2759/2 is essential in ensuring the quality and consistency of nonferrous alloys for critical applications. In this post, we will delve deeper into this important standard’s composition, properties, and uses.

What is AMS 2759/2?

If you work in the aerospace industry, you’ve heard of AMS 2759/2. This specification document outlines titanium and alloy-producing aircraft parts’ heat treatment requirements. The paper provides specific details on the temperature, atmosphere, and hold time necessary to achieve the desired mechanical properties of the material. While it may seem like a dry topic, understanding the requirements of AMS2759/2 is crucial for ensuring the safety and reliability of aircraft components. As technology advances, the demands on these components will only increase, making compliance with AMS2759/2 all the more important.

AMS 2759/2 Composition

AMS 2759/2 applies to various nonferrous alloys, including aluminium, copper, magnesium, titanium, and their alloys. These materials are commonly used in aerospace and defence applications due to their lightweight, high strength, and excellent corrosion resistance. The standard outlines the chemical composition requirements for each alloy to achieve the desired properties after heat treatment.

AMS 2759/2 Physical Properties

AMS 2759/2 specifies various physical properties of nonferrous alloys, including density, thermal, and electrical conductivity. These properties are essential in determining the suitability of the material for specific applications. For example, high thermal conductivity is desirable in heat exchanger components to transfer heat efficiently. To ensure consistent performance, the standard specifies requirements for the material’s microstructure, such as grain size and distribution.

AMS 2759/2 Mechanical Properties

Aside from physical properties, AMS 2759/2 also specifies the mechanical properties of nonferrous alloys after heat treatment. These properties include tensile strength, yield strength, and elongation, which determine the load-bearing capacity of the material. The standard also specifies the required hardness of the material after heat treatment, which is essential in maintaining dimensional stability and resistance to wear and tear.

AMS 2759/2 Uses

AMS 2759/2 is widely used in aerospace and defence applications, where lightweight and high-strength materials are essential. These include aircraft components, rocket parts, and defence systems. The standard ensures that the nonferrous alloys used in these applications meet the stringent requirements for quality and consistency.

AMS 2759/2 Hardness

One of the critical properties specified by AMS 2759/2 is the hardness of the heat-treated material. Hardness is a measure of the material’s resistance to deformation, and it is essential in maintaining dimensional stability and wear resistance. The standard specifies the methods for measuring the hardness of nonferrous alloys, such as Brinell and Rockwell hardness tests. The desired hardness depends on the application and can range from relatively soft to extremely hard.

AMS 2759/2 Heat treatment

AMS 2759/2 also outlines nonferrous alloys’ recommended heat treatment processes, including annealing, solution heat treatment, and ageing. These processes are crucial in achieving the material’s desired physical and mechanical properties. To ensure consistent results, the standard specifies the required heating and cooling rates, temperature ranges, and holding times for each heat treatment process.


AMS 2759/2 is a vital standard for the heat treatment of nonferrous alloys used in critical applications. The standard outlines the composition, physical and mechanical properties, and recommended heat treatment processes to ensure consistent quality and performance. Understanding AMS 2759/2 is crucial in selecting the most suitable nonferrous alloy for a particular application and maintaining its performance during use.

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