ThePipingMart Blog Grades AMS 5772 Haynes Alloy – Composition, Properties, and Uses

AMS 5772 Haynes Alloy – Composition, Properties, and Uses

AMS 5772

AMS 5772 is a high-strength stainless steel alloy commonly used in aerospace and defence applications. This alloy is known for its excellent mechanical properties and corrosion resistance, making it an ideal choice for demanding environments. If you’re considering using AMS 5772 in your next project, you should know a few key things about its composition, physical and mechanical properties, heat treatment, and uses.

What is AMS 5772?

AMS 5772 (also known as Haynes 188 Alloy) is an aluminium alloy, specifically a heat-treatable wrought alloy. It has a high strength-to-weight ratio and good corrosion resistance, all at an increased temperature. It is most notably used in aerospace components such as wings, fuselages, and landing gear due to its superior properties.

What Form Is AMS 5772 Available at Piping Mart?

  • Haynes 188 Bars

AMS 5772 Composition

AMS 5772 includes high levels of chromium, molybdenum, and nitrogen, giving it excellent corrosion resistance and strength. Additionally, it contains small amounts of other elements, such as nickel, carbon, and sulfur, that contribute to its overall properties.

Element Content (%)
Cobalt, Co ≥ 37
Nickel, Ni 22
Chromium, Cr 22
Tungsten, W 14
Iron, Fe ≤ 3
Manganese, Mn ≤ 1.25
Silicon, Si ≤ 0.50
Carbon, C ≤ 0.15
Lanthanum, La 0.040
Phosphorous, P 0.020
Sulfur, S 0.015

AMS 5772 Physical Properties

AMS 5772 has a density of 7.8 grams per cubic centimetre and a melting point of around 1,370 degrees Celsius. It has a high tensile strength of up to 210 ksi and a yield strength of up to 190 ksi. Additionally, it has a low coefficient of thermal expansion, which means it can withstand extreme temperature fluctuations without significant dimensional changes.

Properties Metric Imperial
Density 8.9 g/cm3 0.324 lb/in3
Melting point 1330°C 2425°F

AMS 5772 Mechanical Properties

The mechanical properties of AMS 5772 make it an ideal choice for high-performance applications that require strength, durability, and resistance to corrosion. It has a high elastic modulus and is highly resistant to fatigue and stress corrosion cracking. Furthermore, it has excellent toughness and flexibility, allowing it to withstand heavy impact and deformation.

AMS 5772 Equivalent

  • AMS 5608
  • AMS 5772
  • GE B50A712
  • GE B50TF74
  • GE B50TF74A
  • PWA 1042

AMS 5772 Uses

AMS 5772 is commonly used in aerospace and defence applications that require high-strength materials with excellent corrosion resistance properties. It is often used to manufacture engine parts, landing gear, and other critical components in aircraft, as well as missile components, fuel system parts, and turbine blades. Additionally, it is used in industrial processes such as chemical processing, oil and gas, and power generation.

AMS 5772 Hardness

AMS 5772 has a high hardness level that can be increased through heat treatment processes such as annealing and quenching. It is known for its exceptional resistance to abrasion, which makes it an ideal choice for applications that require wear resistance.

AMS 5772 Heat treatment

Heat treatment processes such as annealing and quenching can be used to enhance the properties of AMS 5772. Annealing can improve flexibility and toughness, while quenching can increase its hardness and strength. Additionally, AMS 5772 can be tempered to reduce its brittleness and improve its impact strength.


AMS 5772 material is an exceptional high-strength stainless steel alloy with outstanding corrosion resistance properties, making it an ideal choice for demanding environments. Its composition, physical and mechanical properties, heat treatment, hardness, and uses make it popular in aerospace, defence, industrial, and power generation applications. If you’re looking for a high-performance material that can withstand extreme conditions, then AMS 5772 is an excellent choice.

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