ThePipingMart Blog Grades AMS 4056 Aluminum Alloy – Composition, Properties and Uses

AMS 4056 Aluminum Alloy – Composition, Properties and Uses

AMS 4056

AMS4056 is a popular material commonly used in the aerospace industry. It is known for its high strength, fatigue, and heat resistance. This alloy is widely used to manufacture critical parts of aircraft engines, landing gears, and other components. This blog post will discuss the composition, physical and mechanical properties, hardness, heat treatment, and the various uses of AMS 4056.

What is AMS 4056?

AMS 4056 (also known as 5083 Aluminum Alloy) is a specification established by the Aerospace Material Specification Committee to define the requirements for high-strength aluminium alloy sheets commonly used in the aerospace industry. This specification ensures that the sheets meet the necessary standards for strength, durability, and workability and are suitable for various applications. Whether you’re building an aircraft, spacecraft, or other aerospace-related components, understanding the details of AMS4056 is crucial for ensuring that your project meets the highest standards of quality and reliability.

What Forms Is AMS 4056 Available at Piping Mart?

  • Pipes
  • Tubing
  • Pipe Fittings
  • Forged Fittings

AMS 4056 Composition

AMS 4056 is a nickel-based alloy that contains chromium, iron, and tungsten. The composition of this material ranges from 35-55% nickel, 18-21% chromium, 3-4.5% tungsten, and 0.25-0.50% carbon. These alloying elements enhance its high-temperature strength, excellent corrosion, and oxidation resistance.

Element % Present
Si 0.4
Fe 0.4
Cu 0.1
Mn 0.4-1.0
Mg 4.0-4.9
Zn 0.25
Ti 0.15
Cr 0.05-0.25
Al Balance

AMS 4056 Physical Properties

The physical properties of AMS 4056 make it an ideal material for use in high-temperature environments. It has a density of 8.43 grams per cubic centimetre and a melting point of 1397-1432°C. This alloy has a thermal conductivity of 9.9 W/m.K and a specific heat of 0.45 J/g°C.

Property Value
Density 2650 kg/m3
Melting Point 570°C
Modulus of Elasticity 72 GPa
Electrical Resistivity 0.58 x 10-6 Ω.m
Thermal Conductivity 121 W/m.K
Thermal Expansion 25 x 10-6/K

AMS 4056 Mechanical Properties

AMS 4056 has impressive mechanical properties, making it an excellent material for high-stress applications. It has a tensile strength of 1700 MPa, yield strength of 1285 MPa, and an elongation of 10% at room temperature. This alloy has a fatigue strength of 1300 MPa at 427°C, making it ideal for gas turbines and other high-temperature applications.

AMS 4056 Equivalents

  • Al Mg4.5Mn0.7
  • AlMg4.5Mn
  • GM41
  • A95083

AMS 4056 Uses

The flexibility and durability of AMS 4056 make it a popular material in producing various aircraft components. It is commonly used to fabricate engine combustion chambers, turbine engines, and landing gear parts. This material is also used to produce turbo compressors, aerospace systems, and other critical components used in the aerospace industry.

AMS 4056 Hardness

AMS 4056 has a high hardness rating due to its unique composition. It has a Rockwell hardness rating of 45 HRC, which is a testament to its strength and durability. The high hardness rating of this material makes it suitable for use in applications with high strength.

AMS 4056 Heat Treatment

AMS 4056 can be heat-treated to enhance its mechanical properties. The material can be annealed by heating it for 1 hour at 1065°C and cooling it in air. This process will result in a softer, more pliable material and easier to work with. For enhanced mechanical properties, the material can be heat-treated at 1180°C for one hour and then air-cooled.


AMS 4056 material is a highly versatile material widely used in the aerospace industry. It is known for its excellent heat resistance, superior mechanical properties, and exceptional corrosion resistance. The unique composition of this alloy makes it an ideal material for use in high-temperature applications, such as gas turbines, combustion chambers, and turbo compressors. Its high hardness rating and excellent heat treatment capabilities make it an excellent choice for high-stress applications. Overall, AMS 4056 is a reliable and trustworthy material that has proven durable and long-lasting.

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