ThePipingMart Blog Grades AMS 5664 Nickel Alloy – Composition, Properties, Uses

AMS 5664 Nickel Alloy – Composition, Properties, Uses

AMS 5664

In metal alloys, AMS 5664 is known as one of the most versatile and widely used materials. It has outstanding physical and mechanical properties making it ideal for various industrial applications. In this guide, we’ll delve into all the crucial elements of AMS 5664, including its composition, physical and mechanical properties, common uses, hardness, and heat treatment. If you’re looking for a comprehensive guide on AMS 5664, keep reading!

What is AMS 5664?

AMS 5664 (also known as Inconel Alloy 718) is a high-performance alloy widely used in the aerospace and nuclear industries. Developed by the Aerospace Materials Specification Committee, this nickel-based superalloy offers excellent strength, durability, and resistance to high temperatures and corrosion. Its exceptional properties make it an ideal material for critical components like turbine blades, exhaust nozzles, and jet engine parts. In short, AMS 5664 is crucial for modern aviation and power generation.

What Form is AMS 5664 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 5664 Composition

AMS 5664 material is a nickel-based alloy that contains chromium, molybdenum, and iron as its primary alloying elements. It’s known for its excellent corrosion resistance, high-temperature strength, and outstanding oxidation resistance, making it ideal for use in environments with high temperatures and severe corrosion.

Element Content (%)
Nickel, Ni 52
Iron, Fe 19
Chromium, Cr 18
Niobium, Nb 5
Tantalum, Ta 5
Molybdenum, Mo 3
Cobalt, Co ≤ 1
Titanium, Ti 0.90
Aluminum, Al 0.50
Manganese, Mn ≤ 0.35
Silicon, Si ≤ 0.35
Copper, Cu ≤ 0.10
Carbon, C 0.050
Boron, B 0.0090

AMS 5664 Physical Properties

AMS 5664 bars exhibits incredible physical properties critical to its various industrial applications. It has a density of 0.305 lb/in3, a melting point of 2,450 ℉, and a boiling point of 4,700 ℉. Additionally, it has a high coefficient of thermal expansion, low electrical resistivity, and high thermal conductivity.

Properties Metric Imperial
Density 8.23 g/cm3 0.297 lb/in3

AMS 5664 Mechanical Properties

The mechanical properties of AMS 5664 sheets make it a favourite of several industries. It has a tensile strength of about 140 ksi and a yield strength of 60 ksi. It also comes with a low coefficient of elasticity modulus, making it resistant to deformation and plasticity. Additionally, it shows excellent toughness, flexibility, and fatigue resistance, among other properties.

Properties Metric Imperial
Tensile strength 1395 MPa 202300 psi
Yield strength 1175 MPa 170400 psi
Elastic modulus 200 GPa 29000 ksi
Elongation at break 22.3 % 22.3 %

AMS 5664 Equivalent

AMS 5589 AMS 5832 ASTM B637 GE B50TF14 GE B50TF15
AMS 5590 AMS 5664 ASTM B670 GE B50 TF69 PWA 1009
AMS 5596 AMS 5663 DIN 2.4668 GE B14H89 PWA 1010
AMS 5597 AMS 5662 DIN 2.4688 GE B50 TF14 PWA 1033
RBO 170-153 SPS M275 SPS M637

AMS 5664 Thermal Properties

Properties Metric Imperial
Thermal expansion co-efficient (at 25-200°C/77-392°F) 12.8 µm/m°C 7.11 µin/in°F
Thermal conductivity 11.4 W/mK 79.1 BTU in/hr.ft².°F

AMS 5664 Uses

AMS 5664 is highly versatile and finds uses in various industrial sectors. For instance, it’s used in constructing jet engine components such as afterburners, combustion zones, and turbine blades due to its high temperature and corrosion resistance. It also produces industrial gas turbines, power plants, and heat exchangers. Its versatility extends to the petrochemical sector, where it produces valves, fittings, and other chemical processing equipment.

AMS 5664 Hardness

AMS 5664 is one of the hardest materials in the aerospace and defence industries, making it ideal for high-strength and tough applications. Its impressive hardness is mainly due to adding molybdenum and chromium in the alloy, which helps form stable carbides that increase hardness.

AMS 5664 Heat Treatment

Depending on the intended application, AMS 5664 can undergo various heat treatments to enhance its properties. It can undergo annealing or solution heat treatment to restore malleability, toughness, or precipitation hardening to increase hardness and strength. The heat treatment process must be carefully and slightly adjusted to bring out the best mechanical properties without compromising the material’s original properties.


AMS 5664 material is widely used in aerospace, military, and chemical processing industries. Its outstanding physical and mechanical properties, including high-temperature resistance, corrosion resistance, and hardness, make it ideal for a wide range of applications. With this guide on AMS 5664, we hope you have all the essential information about this widely used material. If you want to learn more, look for a certified professional who can provide in-depth information and insight into this alloy.

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