ThePipingMart Blog Grades SAE AMS 5814 Cobalt Alloy – Composition, Properties, and Uses

SAE AMS 5814 Cobalt Alloy – Composition, Properties, and Uses

AMS 5814

When it comes to aerospace engineering, materials play a crucial role in determining the success of a project. Among the many materials available in the market, AMS 5814 has been a popular choice recently. But what is AMS 5814, and what makes it stand out from other materials? In this blog, we will dive deep into the composition, physical and mechanical properties, uses, hardness and heat treatment of AMS 5814.

AMS 5814 Composition

AMS 5814 is a type of high-performance steel alloy that contains molybdenum, nickel, and chromium. It is austenitic stainless steel and is categorized under Nickel Alloy High-Performance Alloys. The composition of this material makes it highly resistant to corrosion, oxidation, and acid attacks, making it an excellent material for use in harsh environments.

AMS 5814 Physical Properties

AMS 5814 has a 7.99g/cm³ density, slightly lower than most steel alloys. It also has a melting point of 1398°C and a boiling point of 2798°C. This material has a high electrical conductivity of 2.1 %IACS, making it an excellent conductor of electricity.

AMS 5814 Mechanical Properties

AMS 5814 has excellent mechanical properties, which make it an ideal choice for demanding aerospace applications. The material has a tensile strength of 255ksi and a yield strength of 115 ksi. The elongation at break for AMS 5814 is 5%, and the modulus of elasticity is 30Mpsi.

AMS 5814 Uses

One of the primary uses of AMS 5814 is in the aerospace industry. Its excellent mechanical and physical properties make it an ideal choice for use in aircraft parts that are subject to high stress and harsh environments. It is also commonly used in the production of gas turbines and other industrial applications that require a material with high resistance to corrosion and oxidation.

AMS 5814 Hardness

In its annealed condition, AMS 5814 has a maximum hardness of 200 Brinell. However, its hardness can increase to 600 Brinell through cold working. The hardness of AMS 5814 can also be further increased through heat treatment.

AMS 5814 Heat treatment

AMS 5814 can be heat treated to increase its hardness and improve its mechanical properties. This is usually done through the process of annealing or hardening. Annealing is carried out at high temperatures, and it helps to restore the material’s structure and properties. Hardening, however, involves heating the material to a high temperature and cooling it rapidly. This process results in a harder and more durable fabric.


In conclusion, AMS 5814 is a high-performance steel alloy with excellent mechanical and physical properties. Its high resistance to corrosion, oxidation and acid attacks makes it an ideal choice for use in harsh environments. Its excellent mechanical properties make it an ideal choice in demanding aerospace applications. The versatility of AMS 5814 makes it a highly sought-after material, and its heat treatment properties allow it to be further enhanced and customized for specific applications.

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