ThePipingMart Blog Grades AMS 4029 Aluminum Alloy – Composition, Properties and Uses.

AMS 4029 Aluminum Alloy – Composition, Properties and Uses.

AMS 4029

When it comes to aerospace and engineering applications, choosing the right materials is critical to ensuring product quality and reliable performance over time. AMS4029 is a popular material with superior physical and mechanical properties, making it an excellent choice for various applications. This blog will explore AMS 4029’s composition, physical and mechanical properties, uses, and heat treatment processes.

What is AMS 4029?

AMS 4029 (also known as 2024 Aluminum Alloy) is a specification that outlines the requirements for an aluminium alloy 2024 plate. This material is widely used in aerospace due to its high strength and excellent corrosion resistance. The specification sets strict guidelines for the alloy’s chemical composition, mechanical properties, and metallurgical characteristics. It also outlines the procedures for testing and inspecting the plate to ensure it meets the required standards. As an expert in this field, I can confidently say that AMS4029 is vital for anyone involved in manufacturing or using an aluminium alloy 6061-T651 plate. Understanding this specification is essential for producing high-quality products that meet the stringent demands of the aerospace industry.

What Form Is AMS 4029 Available at Piping Mart?

  • Pipes
  • Tubing
  • Sheet Plates

AMS 4029 Composition

AMS4029 is an aluminium alloy known for its high strength and corrosion resistance. The material’s primary components include magnesium, silicon, and iron, with trace amounts of copper, zinc, titanium, and other elements. The composition of AMS 4029 makes it a suitable option for high-stress applications, where fatigue resistance is crucial and extreme weather conditions are expected.

Element Content (%)
Aluminium / Aluminum, Al 93.5
Copper, Cu 4.4
Silicon, Si 0.8
Magnesium, Mg 0.5
Cromium, Cr 0.1 (Max)
Manganese, Mn 0.6

AMS 4029 Physical Properties

One of the physical properties of AMS4029 is its density, which is about 2.76 grams per cubic centimetre (g/cm³). The material’s melting point is around 547°C (1,017°F), which makes it easy to cast, forge, and weld. The alloy’s hardness ranges from 65 to 75, which is relatively high compared to other materials. AMS 4029 also displays excellent corrosion resistance, making it suitable for marine and aerospace environments.

Properties Metric Imperial
Density 2.8 g/cm3 0.1018 lb/in3
Melting point 510°C 950°F

AMS 4029 Mechanical Properties

Regarding mechanical properties, AMS 4029 exhibits superior fatigue resistance and excellent flexibility and is easy to machine. The material’s ultimate tensile strength is about 90 ksi (620 MPa), which can withstand high-stress levels without breaking or deforming. It also has a low thermal conductivity and is non-magnetic, making it a good choice for various applications.

Properties Metric Imperial
Elastic modulus 70-80 GPa 10152-11603 ksi
Poisson’s ratio 0.33 0.33

AMS 4029 Equivalents

ASTM BB241 DIN 3.1255 MIL T-15089 QQ A-200/2 QQ A-225/4
QQ A-250/4 QQ A-367 SAE J454

AMS 4029 Uses

The uses of AMS 4029 are broad and include aerospace and defence industries, marine applications, and automotive manufacturing. Its excellent corrosion resistance makes it a perfect choice for marine and offshore equipment such as fuel tanks, hulls, and marine engines. Additionally, it is used in producing aircraft fuselages, wing components, and landing gear, where its high strength and flexibility are critical.

AMS 4029 Heat Treatment

Regarding heat treatment, AMS 4029 responds well to solution heat treatment and ageing. Solution heat treatment involves heating the material to a specific temperature (usually between 460°C-500°C), followed by quenching in water or oil. This process helps achieve maximum strength while maintaining the material’s flexibility. Ageing or precipitation hardening is heating the metal to a specific temperature (usually between 120°C-200°C) to improve its hardness.


In summary, AMS 4029 is a versatile material with excellent physical and mechanical properties. Its unique composition and hardness make it a perfect choice for high-stress applications where fatigue resistance is crucial. It’s corrosion resistance and ductility also make it ideal for marine applications. With proper heat treatment, AMS 4029 can attain maximum strength and hardness for maximum durability.

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