ThePipingMart Blog Grades AMS 5375 Alloy – Composition, Properties, and Uses

AMS 5375 Alloy – Composition, Properties, and Uses

AMS 5375

AMS 5375 is a high-performance alloy primarily used in the aerospace industry. Its unique composition and mechanical properties make it ideal for creating key components in aircraft engines, landing gear, and other critical applications. In this blog post, we’ll look in-depth at what AMS 5375 is, its composition, physical and mechanical properties, uses of hardness, heat treatment, welding, and corrosion resistance.

AMS 5375 Composition

AMS 5375 is a high-strength nickel-cobalt-chromium-molybdenum superalloy for high-temperature strength and corrosion resistance applications. It has a chemical composition of about 50.5% nickel, 20-22% cobalt, 18-21% chromium, 8-9.5% molybdenum, and several other elements like tungsten, iron, and silicon.

AMS 5375 Physical Properties

Due to its unique composition, AMS 5375 offers excellent physical properties, making it ideal for high-temperature applications. It has a density of 8.3-8.5 g/cm³, a melting point of 1,370 °C, and a thermal conductivity of 11.1 W/(m. K).

AMS 5375 Mechanical Properties

AMS 5375 also has impressive mechanical properties, including high tensile strength, yield strength, and ductility. Its tensile strength can range from 1350-1615 MPa, and its yield strength is above 1205 MPa. Additionally, it has high fatigue strength, making it suitable for parts that experience cyclic loading.

AMS 5375 Uses

AMS 5375 is commonly used in aircraft engine components, such as turbine impellers, combustion chambers, and high-temperature blades. It is also used in landing gear, exhaust system parts, and other crucial aerospace components. Due to its excellent thermal and corrosion resistance properties, it is also used in chemical plants and oil refineries.

AMS 5375 Hardness

AMS 5375 has a high hardness level, typically ranging from 38-42 HRC. This makes it resistant to wear and abrasion and ideal for use in high-stress environments.

AMS 5375 Heat Treatment

AMS 5375 requires a specific heat treatment process to ensure its optimum performance. It is typically heat treated by solution annealing and then air cooling. Alternatively, it can be solution treated at a lower temperature, followed by ageing at a temperature range of 750-810°C for 8-24 hours.


In conclusion, AMS 5375 is a high-performance alloy with excellent physical and mechanical properties, making it ideal for critical aerospace applications. Its unique composition and properties provide superior high-temperature strength and corrosion resistance, making it a popular choice in the aerospace industry. If you need a high-strength super alloy for critical applications, AMS 5375 might be the right choice.

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