ThePipingMart Blog Grades AMS 5876 Cobalt Elgiloy- Composition, Properties, and Uses

AMS 5876 Cobalt Elgiloy- Composition, Properties, and Uses

AMS 5876

Regarding high-performance alloys, AMS 5876 stands out as a top contender. This alloy is a precipitation-hardenable nickel-chromium-iron alloy that offers excellent strength, toughness, and corrosion resistance. This blog post covers everything you need about AMS 5876, including its composition, physical and mechanical properties, uses, hardness, and heat treatment.

AMS 5876 Composition

AMS 5876 comprises nickel, chromium, iron, molybdenum, titanium, aluminium, and carbon. The precise composition is controlled to ensure consistent mechanical properties and corrosion resistance.

AMS 5876 Physical Properties

AMS 5876 has a 0.293 lb/in^3 density and a melting point of 2460°F. At room temperature, its electrical conductivity is 13.2 μΩ·m, and its thermal conductivity is 14.6 W/mK. It also has excellent resistance to oxidation and sulfidation.

AMS 5876 Mechanical Properties

AMS 5876 has excellent strength, toughness, good elasticity, and fatigue resistance. Its tensile strength ranges from 145 ksi to 225 ksi, depending on the heat treatment. Its yield strength ranges from 85 ksi to 185 ksi, and its elongation is typically 12%. AMS 5876 also has excellent fracture toughness and high-temperature strength.

AMS 5876 Uses

AMS 5876 is primarily used in high-temperature applications, such as gas turbines and jet engine parts. It is also used in the chemical processing industry, where its excellent corrosion resistance makes it a good choice for handling corrosive fluids.

AMS 5876 Hardness

The hardness of AMS 5876 depends on the heat treatment. In the solution-treated condition, it has a hardness of approximately 25 HRC. After precipitation hardening, the hardness can be increased to 40 HRC or higher.

AMS 5876 Heat Treatment

AMS 5876 can be heat treated to achieve different mechanical properties. The standard heat treatment involves solution treatment at 2150-2250°F and precipitation hardening at 1300-1500°F. This treatment can result in tensile strengths of 200-225 ksi and hardness of 40 HRC.


AMS 5876 is an excellent high-performance alloy with strength, toughness, and corrosion resistance. Its precise composition and heat treatment can be tailored to specific applications, making it a versatile choice for various industries. Whether designing gas turbine parts or handling corrosive fluids, AMS 5876 is worth considering for its excellent mechanical and physical properties.

Related Post