ThePipingMart Blog Grades AMS 4083 Aluminum Alloy – Composition, Properties and Uses

AMS 4083 Aluminum Alloy – Composition, Properties and Uses

AMS 4083

If you are in the aerospace and defence industry, you might have heard the term AMS4083. AMS 4083 is one of the most commonly used alloys for making components in this industry. The alloy is characterized by its excellent strength, hardness, and wear resistance, which makes it ideal for critical applications that require high reliability and durability. This blog post will explore everything you need to know about AMS4083: its composition, physical and mechanical properties, uses, hardness, and heat treatment.

What is AMS 4083?

AMS 4083 (also known as 6061 Aluminum Alloy) is a unique material commonly used in the aerospace industry. This alloy belongs to the category of aluminum-bronze alloys and exhibits excellent mechanical properties such as high strength, corrosion resistance, and wear resistance. It is primarily used for manufacturing intricate parts and components in aircraft and spacecraft due to its ability to withstand extreme conditions. AMS4083 is also used in marine applications and manufacturing tanks and valves. This remarkable material has proven to be a reliable and durable solution for the aerospace industry and beyond.

What form is AMS 4083 Available at Piping Mart?

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

AMS 4083 Composition

AMS 4083 is a nickel-cobalt-chromium-molybdenum alloy that belongs to the family of superalloys. The alloy is composed of 39% nickel, 21% cobalt, 19% chromium, 11.5% molybdenum, and 3% titanium, with trace amounts of iron, silicon, and aluminum. The alloy has excellent resistance to corrosion, oxidation, and high-temperature deformation, which makes it suitable for use in extreme environments.

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

AMS 4083 Physical Properties

AMS 4083 has a density of 8.19 g/cm3 and a melting point of 1340°C (2444°F). The alloy exhibits excellent thermal stability and can withstand temperatures up to 900°C (1652°F). The alloy also has a low thermal expansion coefficient, which means it can maintain its shape and size even at high temperatures.

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

AMS 4083 Mechanical Properties

AMS 4083 has excellent mechanical properties, including high tensile strength, yield strength, and elongation. The alloy has a tensile strength of 207 ksi (1425 MPa), yield strength of 128 ksi (880 MPa), and an elongation of 23%. The alloy also exhibits good fatigue resistance and fracture toughness, making it suitable for high-stress applications.

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 4083 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 4083 Uses

AMS 4083 is commonly used in making components for aerospace and defence applications such as turbine engines, compressor disks, and airframe parts. The alloy is also used in chemical processing, nuclear power generation, and medical applications. Due to its excellent strength and wear resistance, AMS 4083 is an ideal material for critical applications that require high reliability and durability.

AMS 4083 Hardness

AMS 4083 has a hardness range of 31 to 41 HRC (Rockwell C). Heat treatment can harden the alloy to increase its strength and wear resistance. The hardness of the alloy can be controlled by adjusting the temperature and time of the heat treatment.

AMS 4083 Heat treatment

AMS 4083 can be heat treated by solution annealing, stress relieving, and precipitation hardening. Solution annealing involves heating the alloy to a high temperature and cooling it rapidly to improve its ductility and toughness. Stress relieving reduces the residual stresses in the alloy that can lead to deformation and cracking. Precipitation hardening involves heating the alloy to a high temperature and then cooling it slowly to allow the precipitation of hardening phases that increase the strength and hardness of the alloy.


AMS 4083 material is a versatile nickel-cobalt-chromium-molybdenum alloy with excellent strength, hardness, and wear resistance. The alloy is ideal for critical aerospace and defence applications requiring high reliability and durability. Its excellent properties make it suitable for use in extreme environments such as high temperatures and corrosive environments. Understanding the composition, physical and mechanical properties, uses, hardness and heat treatment of AMS 4083 is essential for anyone involved in the manufacturing or designing components in the aerospace and defence industry.

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