ThePipingMart Blog Grades AMS 4009 Aluminum Alloy – Composition, Properties and Uses

AMS 4009 Aluminum Alloy – Composition, Properties and Uses

AMS 4009

Whether you’re a materials engineer or simply an aviation, aerospace or defence enthusiast, AMS4009 is a familiar term you might have come across. The AMS 4009 specification is popular for manufacturing parts and materials with excellent mechanical and physical characteristics suitable for high-demand manufacturing environments.

In this article, we’ll dive deep into what AMS4009 is, its composition, physical and mechanical properties, uses hardness and heat treatment properties.

What is AMS 4009?

AMS 4009 (also known as 6061 Aluminum Alloy) is a specific type of material used in the aerospace industry. This material is a high-strength aluminium alloy resistant to fatigue and corrosion. AMS4009 is commonly used to construct aircraft parts such as landing gear and engine components. It is strong, durable, and maintains its integrity at high temperatures, making it an ideal aeroplane choice. With its unique properties, it’s no wonder that the AMS4009 has become a popular choice for engineers and manufacturers in the aerospace industry.

What Form Is AMS 4009 Available at Piping Mart?

  • Pipes
  • Tubing
  • Sheet Plates
  • Fittings
  • Forged Fittings
  • Pipes Fittings

AMS 4009 Composition

AMS4009 is a specification that designates a high-strength aluminium alloy primarily intended for manufacturing aerospace and defence parts. The material is a wrought aluminium alloy containing small percentages of copper, iron, manganese, silicon, magnesium, and other trace elements. Its nominal composition is Al-2.75Cu-1.7Mg-0.12Zr.

Element Content (%)
Aluminium / Aluminum, Al 97.9
Magnesium, Mg 1
Silicon, Si 0.60
Copper, Cu 0.28
Chromium, Cr 0.20

AMS 4009 Physical Properties

The physical properties of AMS 4009 are remarkable, and these properties are achieved through the presence of copper and magnesium. These two elements enhance the material’smaterial’s strength, hardness, and wear resistance, while manganese and silicon also play a vital role in improving its machinability. AMS 4009’s4009’s density is around 0.102 lb/in³, and its melting point ranges between 475°C and 635°C.

Properties Metric Imperial
Density 2.7 g/cm3 0.0975 lb/in3
Melting point 588°C 1090°F

AMS 4009 Mechanical Properties

The mechanical properties of AMS 4009 also make it an excellent choice for aerospace and defence applications. Its typical ultimate tensile strength is about 74 ksi, which makes it solid and durable. AMS 4009’s4009’s elongation at break is around 10%, and its hardness range is between 80 and 94 HRB, depending on its heat treatment condition.

Properties Metric Imperial
Tensile strength 310 MPa 45000 psi
Yield strength 276 MPa 40000 psi
Shear strength 207 MPa 30000 psi
Fatigue strength 96.5 MPa 14000 psi
Elastic modulus 68.9 GPa 10000 ksi
Poisson’s ratio 0.33 0.33
Elongation 12-17% 12-17%
Hardness, Brinell 95 95

AMS 4009 Equivalents

AMS 4117 ASTM B247 ASTM B429 DIN 3.3211 MIL G-18014 QQ A-200/8
ASTM B209 ASTM B307 ASTM B483 MIL A-12545 MIL G-18015 QQ A-225/8
ASTM B210 ASTM B313 ASTM B547 MIL A-22771 MIL P-25995 QQ A-250/11
ASTM B211 ASTM B316 ASTM B548 MIL F-17132A MIL T-7081 QQ A-367
ASTM B221 ASTM B345 ASTM B632 MIL F-18280 MIL W-23351 QQ A-430
ASTM B234 ASTM B361 ASTM F467 MIL F-39000 MIL W-85 QQ WW-T-700/6
ASTM B241 ASTM B404 ASTM F468 MIL F-3922 QQ A-200/16 SAE J454

AMS 4009 Uses

AMS 4009 is used in many areas, including the aerospace and defence industries. It is commonly utilized in parts found in planes, rockets, and spacecraft components due to its excellent mechanical properties, good weldability and resistance to stress cracking, and exceptional strength-to-density ratio. AMS 4009 is also employed in manufacturing missile parts requiring high strength and toughness.

AMS 4009 Hardness

As an expert in materials science, I am happy to provide insights into the fascinating topic of AMS 4009 Hardness. This standard defines the requirements for carbon and low alloy steels based on their hardness and tensile strength. The hardness level of a material, as determined by standardized tests, is an excellent indicator of its strength and ability to resist wear and tear. The AMS 4009 standard is commonly used in aerospace and defence industries, where alloys with high strength and durability are required to withstand extreme temperatures and harsh environments. The importance of hardness in engineering applications cannot be overstated, and careful attention to the AMS 4009 standard can ensure that the chosen materials meet high-quality standards.


AMS 4009 material is a popular aluminium alloy extensively used in aerospace and defence applications. Its unique physical and mechanical properties make it an outstanding choice for various applications that require high strength, durability, and toughness. Its composition, physical and mechanical properties, uses, hardness, and heat treatment properties outlined in this article should explain why it is so well-regarded. If you work in an industry that requires robust yet lightweight materials, AMS 4009 may be the ideal choice for your application.

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