ThePipingMart Blog Grades AMS 4544 Monel Alloy – Composition, Properties and Uses

AMS 4544 Monel Alloy – Composition, Properties and Uses

AMS 4544

AMS4544 is a high-strength alloy known for its excellent properties, high tensile strength, good resistance to corrosion and wear, and excellent machinability. The material is widely used in various industries ranging from aerospace and defence to oil and gas. This blog will explore the composition, physical and mechanical properties, uses, hardness, and heat treatment of AMS 4544.

What is AMS 4544?

AMS4544 (also know as Monel 400 Alloy) is a high-performance material commonly used in the aerospace industry. It is an aluminium bronze alloy known for its excellent strength, durability, and corrosion resistance. This specialized material is often used in applications requiring high strength and toughness, such as engine components, landing gear, and other critical aircraft parts. AMS 4544 is also a popular choice for marine and industrial applications, thanks to its ability to withstand harsh environments and extreme conditions. Whether you’re an engineer looking for a reliable material to use in your next project or simply curious about the latest advancements in materials science, AMS 4544 is undoubtedly a topic worth exploring.

What Form is AMS 4544 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 4544 Composition

AMS 4544 is a nickel-based alloy containing smaller proportions of chromium, iron, molybdenum, and other elements. The composition of AMS 4544 adds to its strength and corrosion resistance properties, making it an excellent choice for various high-performance applications.

Element Content (%)
Nickel, Ni Remainder
Copper, Cu 28-34
Iron, Fe 2.5 max
Manganese, Mn 2 max
Silicon, Si 0.5 max
Carbon, C 0.3 max
Sulphur, S 0.024

AMS 4544 Physical Properties

The physical properties of AMS 4544 include a density of 8.2 g/cm³, a melting point of 1370°C, and excellent thermal and electrical conductivity. The material has good resistance to corrosion and oxidation at high temperatures, making it highly desirable in various industries.

Properties Metric Imperial
Density 8.8 gm/cm3 0.318 lb/in3


AMS 4544 Mechanical Properties

AMS 4544 exhibits excellent mechanical properties such as high tensile strength, elasticity, and impact resistance. The alloy can be easily fabricated, welded, and machined, making it an ideal choice for the aerospace and defence industries.

Properties Metric Imperial
Tensile strength(annealed) 517-620 MPa 75-90 ksi
Yield strength 172-345 MPa 25-50 ksi
Modulus of elasticity 179 GPa 26000 ksi
Poisson’s ratio 0.32 0.32

AMS 4544 Equivalent

  • AMS 4574
  • AMS 4675
  • AMS 4731
  • ASTM B163
  • ASTM B165
  • ASTM F96
  • UNS N04400

AMS 4544 Specification



Metal Type

UNS N04400

AMS 4544 Bar

ASTM B164 QQ-N-281 Din 17750

AMS 4544 Wire

AMS 4544 Sheet

ASTM B127 QQ-N-281

AMS 4544 Plate

ASTM B127 QQ-N-281

AMS 4544 Pipe
AMS 4544 Tube

AMS 4544 Fitting


AMS 4544 Forging


AMS 4544 Weld Wire

FM 60/ ERNiCu-7/ 17753

AMS 4544 Weld Electrode
FM 190 ENiCu-7



AMS 4544 Uses

AMS 4544 is widely used in various applications such as gas turbine engine components, aircraft structural components, missile components, and oil and gas equipment. The material’s high strength and corrosion resistance properties make it highly desirable in these applications.

AMS 4544 Hardness

AMS 4544 has a typical hardness range of 30-35 HRC (Rockwell C scale). The hardness of the material can be increased by heat treatment, which involves heating the material to 1120-1150°C followed by rapid cooling in water or oil.

AMS 4544 Heat treatment

Heat treatment of AMS 4544 is primarily used to increase the material’s hardness. The material is typically annealed at 1010-1120°C for 1 hour, followed by air cooling. This treatment enhances the material’s ductility and machinability. AMS 4544 is also subjected to solution treatment at 1065-1120°C for 1 hour, followed by water or oil quenching. This treatment enhances the material’s strength and toughness.


AMS4544 material is a high-strength nickel-based alloy with excellent mechanical and physical properties. The material is widely used in various industries, including aerospace and defence, oil and gas, and missile components. Its high strength and corrosion resistance properties make it a desirable choice in these applications. Heat treatment of AMS 4544 can further enhance its properties, making it an ideal material for demanding applications that require high performance and reliability.

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