ThePipingMart Blog Grades AMS 5884 Inocoly Alloy – Composition, Properties, and Uses

AMS 5884 Inocoly Alloy – Composition, Properties, and Uses

AMS 5884

Regarding high-quality alloys, AMS5884 is one of the most sought-after materials. As a nickel-based alloy known for its strength, durability, and resistance to corrosion, AMS 5884 has become a staple in various industries, including aerospace, defence, and power generation. However, only some know its composition, physical and mechanical properties, and uses. In this blog post, we’ll delve deeper into the world of AMS5884 and explore everything you need to know.

What is AMS 5884?

AMS 5884 (also known as Incoloy 909) is a precipitation-hardenable stainless steel featuring excellent strength, toughness and formability properties. It is used in applications where high strength, corrosion resistance and ease of fabrication are required. Additionally, AMS 5884 has good weldability characteristics and can retain more than 70 per cent of its tensile strength when post-welded processed.

AMS 5884 Composition

AMP 5884 is a nickel-based superalloy manufactured using a powder metallurgy technique. It comprises approximately 50% nickel, 20% chromium, 10% tungsten, 6% molybdenum, and other trace elements such as boron, iron, and cobalt. These elements work together to create an alloy with unique properties that make it suitable for use in high-stress environments.

Elements Content (%)
Iron, Fe 42
Nickel, Ni 38
Cobalt, Co 13
Niobium, Nb 4.7
Titanium, Ti 1.5
Silicon, Si 0.4
Aluminum, Al 0.03
Carbon, C 0.01

AMS 5884 Physical Properties

One of the most notable physical properties of AMS 5884 is its exceptional resistance to thermal and mechanical fatigue. This means it can withstand extreme temperatures and loading conditions without breaking down or degrading performance. It also has a high melting point of around 1425℃, making it ideal for high-temperature applications. Additionally, the material has excellent corrosion resistance, which means it can withstand exposure to harsh chemicals and other corrosive substances without deteriorating.

Properties Metric Imperial
Density 8.30 g/cm³ 0.300 lb/in³
Melting point 1422°C 2590°F

AMS 5884 Mechanical Properties

Regarding mechanical properties, AMS 5884 is a tough, high-strength material that can withstand wear and tear. It has a tensile strength of around 1500 MPa and a yield strength of approximately 1280 MPa. It is also flexible and can be cold-worked or heat-treated to enhance its mechanical properties.

Properties Metric Imperial
Tensile strength (precipitation hardened. value at room temperature) 1300 MPa 189000 psi
Yield strength (@ strain 0.200%, precipitation hardened, value at room temperature) 1140 MPa 165000 psi
Elongation at break (precipitation hardened) 15% 15%

AMS 5884 Thermal Properties

Properties Metric Imperial
Thermal expansion coefficient (@ 20-427°C/68-801°F) 7.70 µm/m°C 4.28 µin/in°F
Thermal conductivity 14.8 W/mK 103².°F

AMS 5884 Uses

Due to its unique properties, AMS 5884 is used in various industries. It is commonly used in turbine blades, vanes, and other components subjected to high-stress levels and temperature fluctuations in the aerospace industry. It is also used in the defence industry to manufacture high-performance components for missiles, rockets, and other weapons systems. In the power generation industry, it is used in gas turbines and other energy systems that require materials with high-temperature resistance.

AMS 5884 Hardness

The hardness of AMS 5884 varies depending on the heat treatment it undergoes. It has a hardness of around 35 HRC in the as-forged or as-cast condition. However, it can be further hardened through solution heat treatment, quenching, and ageing to achieve a hardness level of up to 48 HRC.

AMS 5884 Heat Treatment

Heat treatment is a crucial aspect of working with AMS 5884. The material must be heat-treated to achieve the desired mechanical and physical properties. Typically, it is heated to around 1065℃ for several hours in a vacuum or inert atmosphere before being cooled to room temperature. This process helps to eliminate any residual stresses in the material and allows it to achieve its maximum strength and toughness.


In conclusion, AMS 5884 material is a superalloy renowned for its strength, durability, and resistance to corrosion and high temperatures. Its unique properties make it ideal for various industrial applications, including aerospace, defence, and power generation. By understanding its composition, physical and mechanical properties, and uses, you can better appreciate this remarkable material and its potential in various industries.

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