ThePipingMart Blog Grades AMS 4186 Aluminum Alloy – Composition, Properties and Uses

AMS 4186 Aluminum Alloy – Composition, Properties and Uses

AMS 4186

Regarding aerospace engineering, the materials used must be of the highest quality possible to meet the industry’s stringent requirements. These materials must withstand the harsh conditions that aerospace equipment is exposed to while maintaining high strength. AMS 4186 is one such material. It is known for its exceptional properties and ability to meet the aerospace industry’s needs. This blog post will explore AMS 4186’s composition, physical and mechanical properties, hardness, and heat treatment.

What is AMS 4186?

AMS 4186 (also known as 7075 Aluminum Alloy) is a standard specification for using low-temperature hot water as a heating medium in closed-loop heating systems. This regulation covers these heating systems’ design and installation criteria to ensure safety, efficiency, and reliability. The standard provides guidelines for material selection, system sizing, and testing, as well as for the operation, maintenance, and repair of the systems. The specification also outlines safety requirements to be followed during installation and operation. Overall, AMS4186 provides a comprehensive framework for using low-temperature hot water heating systems, ensuring they perform optimally and safely.

What Form Is AMS 4186 Available at Piping Mart?

  • Pipes
  • Tubing

AMS 4186 Composition

AMS 4186 is an aluminium alloy commonly used in the aerospace industry. Its composition comprises around 6% copper, 0.4% manganese, 0.50% magnesium, 0.35% iron, 0.35% nickel, and 0.20% silicon. The alloy also has traces of other metals, such as chromium, zinc, and titanium. The high copper and magnesium content gives the material excellent corrosion resistance and makes it suitable for use in various applications.










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AMS 4186 Physical Properties

The physical properties of AMS 4186 include a density of around 2.83 g/cm³ and a melting point of 570°C. It has a tensile strength of 514 MPa and a yield strength of 429 MPa. When tested for elongation, the material is found to have a value of around 14%. These physical properties are important in determining the suitability of AMS 4186 for specific applications.

Physical Properties Metric English Comments
Density 2.81 g/cc 0.102 lb/in³ AA; Typical

AMS 4186 Mechanical Properties

The mechanical properties of AMS 4186 are another factor that sets it apart from other materials. It has a high toughness and fatigue resistance, making it suitable for applications requiring strength and durability. It also has excellent machinability, making it easy to work with and shape into the desired form.

AMS 4186 Uses

The uses of AMS 4186 are widespread. It is commonly used in the construction of aerospace equipment, such as aircraft frames, landing gear components, and extrusions. Due to its corrosion resistance, it is also used in the automotive industry to manufacture engine components and marine applications.

AMS 4186 Hardness

AMS 4186 has a hardness of around 142 Brinell. This high hardness makes it an ideal material for applications where resistance to wear and tear is vital. The high hardness also contributes to its overall strength, making it a durable and reliable material.

AMS 4186 Heat Treatment

Heat treatment is an important aspect of manufacturing AMS 4186. Heat-treated at around 500°C for three hours to achieve maximum strength. The material is left to cool in the air before undergoing a second heat treatment at around 150°C for six hours. This heat treatment process ensures that the material can meet the industry’s exacting standards for strength and durability.


AMS 4186 is a high-quality material widely used in the aerospace and automotive industries due to its exceptional properties. Its composition, physical and mechanical properties, uses, hardness, and heat treatment make it a reliable and durable material suitable for various applications. Understanding the characteristics of AMS 4186 makes it easier to appreciate its importance in the aerospace industry.

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AMS 4186 Aluminum Alloy – Composition, Properties and Uses

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