ThePipingMart Blog Grades AMS 4027 Aluminum Alloy – Composition, Properties and Uses

AMS 4027 Aluminum Alloy – Composition, Properties and Uses

AMS 4027

As the aerospace industry advances, so does the demand for materials that can withstand extreme conditions. One such material is AMS4027, a high-strength aluminium alloy widely used in the aviation industry. This blog post will delve deeper into AMS 4027 and explore its composition, physical and mechanical properties, uses, hardness, and heat treatment.

What is AMS 4027?

AMS 4027 (also known as 6061 Aluminum Alloy) is a specification that outlines the requirements for aluminium alloy sheets used in aircraft applications. This specification was created by the Society of Automotive Engineers and is recognized worldwide as a standard for high-quality aluminium sheets. The AMS4027 specification covers the alloy’s chemical and mechanical properties, ensuring it meets the strict standards required for use in the aviation industry. This makes it an essential document for those involved in the production and maintenance of aircraft, as it ensures the safety and reliability of the materials used. From its composition to its physical properties, AMS4027 ensures that the aircraft we rely on daily are safe and reliable.

What Form Is AMS 4027 Available at Piping Mart?

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

AMS 4027 Composition

AMS4027 is an aluminium alloy primarily composed of aluminium, with small amounts of other elements such as magnesium, silicon, and copper. These trace elements contribute to the alloy’s strength, corrosion resistance, and workability.

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

AMS 4027 Physical Properties

AMS4027 has a density of 2.78 grams per cubic centimetre (g/cm³) and a melting point of 495-635°C, depending on the specific alloy. AMS 4027 also has good thermal and electrical conductivity, which makes it an ideal material for aerospace applications.

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

AMS 4027 Mechanical Properties

AMS 4027 has exceptional mechanical properties, including high strength, toughness, and resistance to fatigue and corrosion. Typically, the alloy exhibits a tensile strength of 469-724 megapascals (MPa) and yield strength of 414-586 MPa, depending on the specific alloy type.

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 4027 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 4027 Uses

AMS 4027 manufactures aircraft parts, such as fuselage skins, wing skins, and structural components. The alloy’s high-strength-to-weight ratio makes it an ideal material for these applications. AMS 4027 is also used to construct high-performance boats, where the alloy’s corrosion resistance properties come to the fore.

AMS 4027 Hardness AMS 4027

AMS 4027 has a Rockwell hardness value of 73-86, depending on the specific alloy. Hardness is an essential property for materials used in the aerospace industry since parts made from softer metals could deform or fail under extreme operating conditions.

AMS 4027 Heat treatment AMS 4027

Heat treatment is the process of heating and cooling a material to enhance its mechanical properties. AMS 4027 is heat-treatable, which makes it an ideal candidate for parts that require superb strength and durability. The heat treatment process varies depending on the specific alloy. Still, it typically involves heating the material to a temperature of 465-500°C and then quenching it in water or oil.


In conclusion, AMS 4027 material is an essential material in the aerospace industry for its exceptional mechanical and physical properties. With its high strength-to-weight ratio, corrosion resistance, and excellent workability, AMS 4027 is one of the most widely used aluminium alloys. The alloy’s composition, physical and mechanical properties, hardness, and heat treatment make it an ideal candidate for aircraft parts, high-performance boats, and other applications where optimal performance is essential.

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