ThePipingMart Blog Grades AMS 4232 Aluminum Alloy – Composition, Properties and Uses

AMS 4232 Aluminum Alloy – Composition, Properties and Uses

AMS 4232

AMS-4232 is a low-alloy steel commonly used in the aerospace industry. It is a material that requires precise composition and processing, making it ideal for critical applications. In this blog post, we will go in-depth about the composition of AMS 4232, its physical and mechanical properties, and how it is used in different industries.

What is AMS 4232?

AMS-4232 is a specification that outlines the requirements for an aluminium alloy used in the aviation industry. The alloy, also known as 7075-T76, is designed to have excellent strength and durability, making it ideal for aircraft components such as wings, fuselages, and landing gear. This specification ensures that the alloy meets specific standards for chemical composition, mechanical properties, and other vital characteristics. By adhering to these requirements, manufacturers can ensure that the materials they use in aircraft construction are reliable and safe. If you’re interested in aviation or engineering, learning more about AMS-4232 is a great way to deepen your understanding of the materials used in modern aircraft.

AMS 4232 Composition

AMS 4232 is a low-alloy steel that contains iron, carbon, and various alloying elements. The composition of AMS 4232 is as follows:

  • Carbon: 0.20 – 0.26%
  • Manganese: 0.60 – 0.90%
  • Phosphorus: 0.015% max.
  • Sulphur: 0.015% max.
  • Silicon: 0.15 – 0.35%
  • Nickel: 0.60 – 0.90%
  • Chromium: 0.30 – 0.60%
  • Molybdenum: 0.15 – 0.25%
  • Vanadium: 0.03 – 0.08%

AMS 4232 Physical Properties

AMS 4232 has excellent physical properties that make it suitable for different applications. Here are some of its physical properties:

  • Density – 7.85 g/cm³
  • Specific Heat Capacity – 480 J/(kg·K)
  • Thermal Expansion – 11.7 x 10^-6/K
  • Thermal Conductivity – 34.3 W/(m·K)
  • Electrical Conductivity – 43.9 MS/m

AMS 4232 Mechanical Properties

AMS 4232 has excellent mechanical properties that make it ideal for different applications. Here are some of its mechanical properties:

  • Tensile strength – 1310 MPa
  • Yield strength – 1170 MPa
  • Elongation – 8%
  • Hardness – 46 HRC
  • Fatigue strength – 685 MPa

AMS 4232 Uses

AMS 4232 is used in various industries, such as aerospace, automotive, and engineering. It is commonly used to manufacture bolts, shafts, gears, and connecting rods. It’s high strength and corrosion-resistant properties make it suitable for critical applications in these industries.

AMS 4232 Hardness

AMS 4232 has a typical hardness of 46 HRC. This hardness level makes it suitable for high strength and wear resistance applications. Hardness is a crucial property in determining the performance of AMS 4232 in different industrial applications.

AMS 4232 Heat treatment

Heat treatment is essential in improving the mechanical properties of AMS 4232. To achieve optimal mechanical properties, AMS 4232 is typically quenched and tempered. This process involves heating the material to a specific temperature and then rapidly cooling it in water or oil. After quenching, the material is tempered to improve its toughness and reduce its brittleness.


In conclusion, AMS 4232 is a low alloy steel with excellent mechanical and physical properties that make it ideal for industrial applications. Its precise composition and processing make it suitable for critical aerospace, automotive, and engineering applications. AMS 4232’s hardness level and ability to withstand high stress and fatigue make it a preferred material for various components. Proper heat treatment is necessary to achieve optimal mechanical properties and ensure the material’s durability and performance.

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