ThePipingMart Blog Grades AMS 4259 Aluminum Alloy – Composition, Properties and Uses

AMS 4259 Aluminum Alloy – Composition, Properties and Uses

AMS 4259

AMS 4259 is a high-strength aluminium alloy designed for use in the aerospace industry. This alloy is known for its excellent mechanical properties, high strength and superior fatigue resistance. This blog post will look in-depth at AMS 4259, including its composition, physical and mechanical properties, uses, hardness, and heat treatment.

What is AMS 4259?

AMS 4309 refers to a specific type of steel material that is used in a wide range of industries. This material is designed to be incredibly strong and durable, making it ideal for applications where reliability and performance are key. Whether you work in aviation, aerospace, or any industry that demands high-quality performance and strength, AMS4309 is an excellent choice. With its excellent corrosion resistance and outstanding mechanical properties, this material is designed to provide exceptional performance in even the most demanding environments. So if you’re looking for a reliable and durable material for your next project, consider choosing AMS 4309.

AMS 4259 Composition

AMS 4259 is a wrought aluminium alloy of aluminium, copper, zinc, magnesium, and nickel. The aluminium content in this alloy makes up the majority, with copper and zinc making up the following highest percentages. Magnesium and nickel are also present in smaller amounts. The precise composition of AMS 4259 can vary slightly depending on the specific application and manufacturing process.

AMS 4259 Physical Properties

AMS 4259 has excellent physical properties, including high strength and toughness, good corrosion resistance, and low density. This alloy is also highly resistant to fatigue and can maintain its performance even after repeated loading and unloading cycles. Furthermore, AMS 4259 has excellent heat conductivity and can withstand high temperatures without degrading.

AMS 4259 Mechanical Properties

In addition to excellent physical properties, AMS 4259 has outstanding mechanical properties. This alloy has a high tensile strength and yield strength, making it an ideal material for applications that require reliable strength and durability. Moreover, AMS 4259 has good flexibility and can be easily formed into complex shapes without cracking or breaking.

AMS 4259 Uses

Due to its exceptional properties, AMS 4259 is commonly used in aerospace and defence applications. This alloy often produces aircraft structural components, such as fuselage and wing components, landing gear, and engine parts. AMS 4259 is also used to manufacture missile and satellite components and in the marine and automotive industries.

AMS 4259 Hardness

AMS 4259 has a high level of hardness, which is important for applications that require resistance to wear or abrasion. The hardness of this alloy is typically in the range of 90-100 on the Rockwell B scale. This high hardness level allows AMS 4259 to withstand high-stress applications without degrading or deforming.

AMS 4259 Heat Treatment

AMS 4259 can be heat-treated to improve its mechanical properties. Heat treatment involves heating the alloy to a specific temperature and rapidly cooling it to harden it. This improves the strength and durability of the alloy, making it suitable for use in high-stress applications.


In conclusion, AMS 4259 is a high-strength aluminium alloy with excellent physical and mechanical properties. Its superior strength, fatigue resistance, and toughness make it an ideal material for use in the aerospace industry and other high-stress applications. This alloy can be heat-treated to further improve its properties, and its high hardness makes it resistant to wear and abrasion. Overall, AMS 4259 is a reliable and versatile material with many industrial applications.

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