ThePipingMart Blog Grades AMS 5662 Nickel Alloy – Composition, Properties, and Uses

AMS 5662 Nickel Alloy – Composition, Properties, and Uses

AMS 5662

AMS 5662 is a high-temperature, high-strength alloy with exceptional physical, mechanical, and chemical properties. This blog post will discuss AMS 5662 in-depth, from its composition to heat treatment and uses. Whether you are considering using this material for your next project or are simply interested in its properties, this guide will provide you with all the essential information.

What is AMS 5662?

AMS 5662 (also known as 718 Inconel Alloy) is a specification that sets the standard for the material characteristics of the Nickel Alloy, Inconel 718. This particular material is known for its exceptional strength at high temperatures and its resistance to corrosion and oxidation, making it a popular choice in aerospace, automotive, and chemical processing industries. Additionally, AMS 5662 outlines specific requirements for the heat treatment of Inconel 718, ensuring that the material maintains its strength and durability throughout its lifespan. Whether powering a spacecraft or withstanding harsh chemicals in a processing plant, AMS5662 provides that Inconel 718 is up to the task.

What Form is AMS 5662 Available at Piping Mart?

  • Nut
  • Bar
  • Bolt
  • Pipe
  • Screw
  • Tubing
  • Valves
  • Washers
  • Flanges
  • Fasteners
  • Electrodes
  • Stud Bolts
  • Sheet Plates
  • Pipe Fittings
  • Forged Fitting
  • Instrumentation Fittings

AMS 5662 Composition

AMS 5662 is a nickel-based alloy comprising approximately 70% nickel, 19% chromium, and 10% molybdenum. The remaining percentage includes other elements such as iron, tungsten, and cobalt. This combination of elements results in a material with excellent corrosion resistance, high-temperature strength, and good weldability.

Element Limiting Chemical Composition (%)
Nickel (plus Cobalt) 50%-55%
Chromium 17%-21%
Niobium (plus Tantalum) 4.75%-5.50%
Molybdenum 2.80%-3.30%
Titanium 0.65%-1.15%
Aluminum 0.20%-0.80%
Cobalt 1% max
Carbon 0.08% max
Manganese 0.35% max
Silicon 0.35% max
Phosphorus 0.015% max
Sulfur 0.015% max
Boron 0.006% max
Copper 0.30% max
Iron Balance*

AMS 5662 Physical Properties

AMS 5662 has a density of 8.4 g/cm³ and a melting point of 1393°C. This material is resistant to oxidation and scaling at elevated temperatures and possesses exceptional thermal conductivity. It has a coefficient of thermal expansion of 12.6 µm/m°C and a specific heat capacity of 430 J/Kg°C.

Density Annealed: 0.296 lb/in3
Annealed and aged: 0.297 lb/in3
Melting Range 2300° to 2437°F  (1260° to 1336°C)
Specific Heat at 21°C (70°F) 0.104 Btu/lb-°F
Permeability at 200 oersted and 21°C (70°F) Annealed material: 1.0013
Annealed and aged material: 1.0011
Curie Temperature °C (°F) Annealed material: <-320°F (<-196°C)
annealed and aged material: -170°F (-112°C)

AMS 5662 Mechanical Properties

AMS 5662 wire has outstanding tensile strength, yielding 130 ksi and tensile strength of 170 ksi. It has excellent ductility and can be easily fabricated into various shapes and sizes. It also displays good creep resistance at high temperatures, making it an ideal material for high-temperature applications.

Mechanical Properties

Tensile Strength, Ultimate1375 MPa199000 psi Precipitation Hardened. Value at room temperature.Tensile Strength, Ultimate at Elevated Temperature1100 MPa160000 psi Precipitation Hardened prior to test; 650°CTensile Strength, Yield1100 MPa160000 psi Precipitation Hardened. Value at room temperature; 0.2% offset.Tensile Strength, Yield at Elevated Temperature980 MPa142000 psi Precipitation Hardened prior to test; 0.2% offset; 650°CElongation at Break25 %25 % Precipitation HardenedElongation at Break at Elevated Temperature18 %18 % Precipitation Hardened prior to test.; 650°C

AMS 5662 Uses

AMS 5662 bars is used in various industrial applications, including gas turbines, jet engines, and aerospace components. This material can withstand high temperatures and extreme environments, making it suitable for these applications. It is also used in chemical processing plants and power generation facilities due to its high corrosion resistance.

AMS 5662 Hardness

AMS 5662 has a hardness range of 25-35 HRC, which is relatively high compared to other alloys. It can be hardened further through heat treatment or cold working.

AMS 5662 Heat Treatment

AMS 5662 material can be heat treated to further increase its mechanical properties. The solution annealing process involves heating the material to 1120-1200°C for two hours, followed by rapid cooling in water or air. This process results in improved flexibility and increased resistance to stress corrosion cracking.


AMS 5662 material is a popular nickel-based alloy with excellent physical, mechanical, and chemical properties. It is widely used in various industrial applications, from gas turbines to chemical processing plants. Its unique combination of elements results in a material resistant to high temperatures, corrosion, and oxidation. Whether you plan to use AMS 5662 for your next project or are simply curious about its properties, this guide provides you with all the essential information you need.

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