ThePipingMart Blog Grades AMS 4180 Aluminum Alloy – Composition, Properties and Uses

AMS 4180 Aluminum Alloy – Composition, Properties and Uses

AMS 4180

AMS 4180 is a specification that defines the composition and properties of a type of aluminium alloy commonly used in the aerospace industry. This high-strength alloy is known for its impressive mechanical properties, excellent corrosion resistance, and good heat resistance. Suppose you’re wondering what makes AMS 4180 such valuable material. In that case, this blog post will cover everything you need to know about its composition, physical and mechanical properties, uses, hardness, and heat treatment.

What is AMS 4180?

AMS 4180 (also known as 1100 Aluminum Alloy) is an important standard that impacts the world of aerospace engineering. Specifically, this standard pertains to the types of aluminium alloys used in aircraft construction. By adhering to the guidelines outlined in AMS4180, engineers can ensure that the aluminium alloys they use are durable, corrosion-resistant, and strong enough to withstand the demands of flight. Keeping up with standards like AMS4180 is one of the many ways the aerospace industry stays on the cutting edge of technology and innovation.

What Form Is AMS 4180 Available at Piping Mart?

  • Pipes
  • Tubing
  • Sheet Plates

AMS 4180 Composition

AMS 4180 is an aluminium alloy consisting primarily of aluminium, with small amounts of copper, magnesium, manganese, and silicon. This unique blend of elements results in a highly resistant material to corrosion, fatigue, and stress cracking. Additionally, AMS 4180 is not susceptible to embrittlement when subjected to high-temperature environments, making it an ideal material for aerospace applications.

Element Content (%)
Aluminium / Aluminum , Al 99.00 (min)
Copper , Cu 0.12

AMS 4180 Physical Properties

The physical properties of AMS 4180 are impressive, with a density of 2.78 g/cm3, a melting point of 585°C, and a coefficient of thermal expansion of 23.7 x 10-6/K. AMS 4180 can withstand high temperatures without deforming or losing its strength, thanks to its low thermal conductivity and high thermal resistance. This makes it an excellent material for use in aerospace components that require both strength and heat resistance.

Properties Metric Imperial
Density 2.71 g/cm3 0.0979 lb/in³

AMS 4180 Mechanical Properties

AMS 4180 has an ultimate tensile strength of 500-550 MPa, yield strength of 345-375 MPa, and moderate flexibility of 6-7%. This makes it a highly desired material for aerospace structures, as it can withstand high stress and strains without deforming or losing shape. AMS 4180 also has impressive fatigue strength and fracture toughness, making it highly resistant to cracking and breakages under high-stress environments.

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

AMS 4180 Equivalents

AMS 4003 AMS 7220 ASTM B209 ASTM B210 ASTM B211 ASTM B221
ASME SFA5.10 (ER1100) ASME SFA5.3 (E1100) ASTM B241 ASTM B247 ASTM B313 ASTM B316
ASTM B548 MIL A-52174 MIL A-52177 MIL C-26094 MIL R-5674 MIL S-24149/5
AWS A5.10 (ER1100) AWS A5.10 (ER1100) AWS A5.3 (E1100) MIL E15597 (MIL-1100) MIL I-23413 (MIL-1100) QQ WW-T-700/1
MIL W-6712 MIL W-85 QQ A-1876 QQ A-1876 QQ A-250/1 QQ A-430
SAE J454

AMS 4180 Uses

AMS 4180 is widely used in aerospace, primarily in structures requiring high strength and excellent corrosion resistance. This includes applications such as aircraft wings and fuselages, fuel tanks, rocket engine components, and even some satellite components. AMS 4180 is also used in marine applications, such as boat propellers, thanks to its excellent corrosion resistance.

AMS 4180 Hardness

AMS 4180 can be measured using the Brinell hardness scale, with a typical 160-180 HB value. This relatively high hardness rating makes AMS 4180 highly resistant to deformation and wear. However, it is crucial to note that the hardness of AMS 4180 can vary depending on the heat treatment process used.

AMS 4180 Heat Treatment

The heat treatment of AMS 4180 is critical to ensure that the material achieves maximum strength and durability. The standard heat treatment process involves quenching and ageing the material. Quenching involves rapidly cooling the material to room temperature to harden the microstructure. At the same time, ageing involves heating the material to a specific temperature for a particular period to improve its mechanical properties. Alternatively, AMS 4180 can be subjected to hard work to achieve desired strength and hardness properties.


Given its impressive composition, physical and mechanical properties use, hardness, and heat treatment, it is no surprise that AMS 4180 is widely used in the aerospace industry. Its excellent resistance to corrosion, fatigue, and stress cracking, high strength, and heat resistance make it an ideal material for use in aircraft structures, fuel tanks, rocket engine components, and even some satellite components. With the right heat treatment and processing, AMS 4180 can also achieve maximum strength and durability, making it highly desirable for applications that require high-performance materials.

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