ThePipingMart Blog Grades AMS 4115 Aluminum Alloy – Composition, Properties and Uses

AMS 4115 Aluminum Alloy – Composition, Properties and Uses

AMS 4115

AMS4115 is an aluminium alloy commonly used in aerospace due to its excellent mechanical and physical properties. It is a high-strength, high-fatigue-resistant material that can withstand extreme temperatures and pressures. This blog post will provide an overview of AMS 4115, its composition, physical and mechanical properties, uses, hardness, and heat treatment. So, let’s dive in!

What is AMS 4115?

If you’re unfamiliar with the term, “AMS4115” might sound like a secret code or cryptic acronym. In actuality, it refers to a specific kind of aluminum alloy. More specifically, AMS 4115 (also known as 6061 Aluminum Alloy) is an aluminium-alloyed sheet created using a heat-treatable method that results in a durable and malleable material. This type of alloy finds application in various industries and manufacturing processes, thanks to its properties that allow it to withstand high temperatures and resist corrosion. So, the next time you hear someone refer to AMS4115, you can impress them with your knowledge of this versatile material.

What form is AMS 4115 Available at Piping Mart?

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

AMS 4115 Composition

AMS4115 is an aluminum alloy that consists of a combination of elements such as magnesium, silicon, iron, and copper. The chemical composition of AMS 4115 is as follows: Magnesium – 0.6%; Silicon – 0.4%; Iron – 0.15%; Copper – 0.1%; Zinc – 0.10%; Titanium – 0.05%; Chromium – 0.05%; Others (each) – 0.05%; Aluminium – remainder. Adding these elements enhances the material properties such as strength, corrosion resistance, and durability.

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

AMS 4115 Physical Properties

AMS 4115 has excellent physical properties that make it suitable for applications in the aerospace industry. It has a density of 2.78 g/cm3, a melting point of 582°C, and a thermal conductivity of 166W/m.K. AMS 4115 also exhibits good electrical conductivity, making it ideal for electrical applications.

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

AMS 4115 Mechanical Properties

AMS 4115 has high mechanical properties that make it suitable for high-stress applications. Its ultimate tensile strength is 482 MPa, and its yield strength is 414 MPa. It also has a high fatigue strength, making it suitable for applications with expected cyclic loading. In addition, AMS 4115 is resistant to stress corrosion cracking, making it ideal for applications in harsh environments.

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 4115 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 4115 Uses

AMS 4115 can be used in a wide range of applications in the aerospace industry, including aircraft structures, wing panels, fuselage skins, and other high-stress components. It also manufactures automotive parts, marine equipment, and industrial machinery. Due to its excellent corrosion resistance, it is also used in marine and offshore structures.

AMS 4115 Hardness

AMS 4115 has a hardness range of 75-85 HRB, making it a moderately hard material that can be easily formed and machined. Its excellent formability and toughness make it suitable for cold-forming operations, such as rolling, stretching, and bending.

AMS 4115 Heat treatment

AMS 4115 can be heat-treated to enhance its mechanical properties. It can be heat-treated, quenched, and aged for maximum strength and durability. The recommended heat treatment for AMS 4115 is solution heat treatment at 510°C for 30 minutes, quenched in water, and aged at 160°C for 24 hours.


In conclusion, AMS 4115 material is a high-strength, high-fatigue-resistant aluminum alloy that offers excellent mechanical and physical properties. Its magnesium, silicon, iron, and copper composition provides enhanced strength, corrosion resistance, and durability. AMS 4115 can be used in a wide range of applications in the aerospace industry and automotive, marine, and industrial machinery. It’s excellent formability and moderate hardness make it a versatile material that can be easily formed and machined. With the right heat treatment, AMS 4115 can achieve maximum strength and durability, making it an attractive material for applications in harsh environments.

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