ThePipingMart Blog Grades AMS 4574 Monel Alloy – Composition, Properties and Uses

AMS 4574 Monel Alloy – Composition, Properties and Uses

AMS 4574

In the world of aerospace engineering and manufacturing, AMS4574 is known as a high-performance alloy that possesses excellent mechanical properties and corrosion resistance. Its composition is specifically designed to meet the rigorous demands of the aerospace industry. So, what exactly is AMS 4574? This blog post will discuss the composition, physical and mechanical properties, hardness, heat treatment, and applications of AMS4574.

What is AMS 4574?

AMS4574 (also known as MONEL 400 Alloy) is a specific type of aluminium alloy commonly used in aerospace applications. Its exceptional strength and durability make it popular for critical aircraft components such as engine parts and landing gear. This alloy also offers good corrosion resistance and excellent fatigue properties, making it a reliable material in harsh environments. AMS 4574 is a prime example of the advanced materials developed for modern aircraft and space exploration. With its unique blend of characteristics, it is no wonder why this alloy has become so widely recognized and utilized in the aerospace industry.

What Form Is AMS 4574 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 4574 Composition

AMS 4574 is a nickel-based alloy that contains a high amount of molybdenum. It also includes chromium, iron, cobalt, titanium, and aluminium elements. The specific composition of AMS 4574 is designed to withstand high temperatures and harsh environments without losing its mechanical properties or corroding.

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 4574 Physical Properties

AMS 4574 has a density of 8.2 g/cm³ and a melting point of approximately 1350°C. It is a non-magnetic material and has excellent thermal conductivity. Moreover, it has a low thermal expansion coefficient, making it highly stable in extreme temperatures.

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

AMS 4574 Mechanical Properties

Regarding mechanical properties, AMS 4574 exhibits excellent performance at high temperatures. It has a high tensile strength of up to 1600 MPa and a yield strength of 1300 MPa. Additionally, AMS 4574 has a high creep resistance, making it ideal for high-heat and high-stress applications.

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 4574 Hardness

AMS 4574 has a hardness level of approximately 300 HB. It is resistant to wear and can withstand harsh conditions without becoming brittle.

AMS 4574 Heat Treatment

AMS 4574 can be heat treated to improve its mechanical properties even further. Annealing can improve its flexibility and resistance to stress corrosion cracking. Additionally, solution treatment can enhance its hardness and strength.

AMS 4574 Equivalent

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

AMS 4574 Specification



Metal Type

UNS N04400

Monel 400 Bar

ASTM B164 QQ-N-281 Din 17750

Monel 400 Wire

Monel 400 Sheet

ASTM B127 QQ-N-281

Monel 400 Plate

ASTM B127 QQ-N-281

Monel 400 Pipe
Monel 400 Tube

Monel 400 Fitting


Monel 400 Forging


Monel 400 Weld Wire

FM 60/ ERNiCu-7/ 17753

Monel 400 Weld Electrode
FM 190 ENiCu-7



AMS 4574 Uses

Due to its unique composition and exceptional properties, AMS 4574 is commonly used in aerospace and aviation industries for turbine blades, exhaust systems, and combustion chamber components. It is also used in the chemical processing industry, where resistance to corrosion and high temperatures is essential.


In summary, AMS 4574 material is a specialist alloy designed to meet the demanding requirements of the aerospace industry. It possesses exceptional mechanical properties and is resistant to high temperatures and corrosion. Its unique composition, strength, and durability make it a go-to material for many high-stress applications. We hope this overview of AMS 4574 has been informative and helpful in understanding this essential material.

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