ThePipingMart Blog Grades AMS 5834 Cobalt Alloy – Composition, Properties, and Uses

AMS 5834 Cobalt Alloy – Composition, Properties, and Uses

AMS 5834

Industrial applications require the use of high-performance metals. Among those is AMS 5834, a nickel-Chromium alloy with outstanding corrosion resistance. This precious metal offers exceptional mechanical properties, making it fit for some of the most demanding environments. But with so much info on the internet, finding a comprehensive guide to the alloy can take time and effort. This blog provides a detailed overview of AMS 5834, its composition, physical and mechanical properties, heat treatment, and suggested uses.

AMS 5834 Composition

AMS 5834 is a nickel-chromium-iron alloy containing roughly 19% of chromium, 14% of nickel, 5% of iron, and 0.33% of carbon. The metal’s high nickel percentage enhances its resistance to corrosion and oxidation, while the Chromium addition offers improved heat resistance and excellent mechanical properties. The high carbon content contributes to the metal’s hardness.

AMS 5834 Physical Properties

AMS 5834 exhibits unique physical properties, including high wear resistance, high-temperature strength, and good ductility. The metal’s melting point is 1395°C (2543°F). AMS 5834’s density is 8.27 g/cm3, and the thermal conductivity ranges from 8.1 W/mK at room temperature to 9.5 W/mK at 932°F (500°C). The alloy’s thermal expansion coefficient is 13.7 µm/m°C at room temperature and 14.5 µm/m°C at 932°F (500°C).

AMS 5834 Mechanical Properties

Mechanical properties are critical when selecting any metal for industrial applications. AMS 5834 offers excellent mechanical properties making it one of the most sought-after metals. The alloy has a tensile strength of 1140 MPa (165000 psi), yield strength of 760 MPa (110000 psi), and an elongation of 25%.

AMS 5834 Uses

AMS 5834 is widely used in many applications that require high-performance metals with excellent corrosion resistance and high-temperature strength. Due to its resistance to oxidation and corrosion, it is commonly used in the aerospace industry for jet engine critical parts and blades. AMS 5834 is also used in industrial and marine environments, including seawater applications.

AMS 5834 Hardness

AMS 5834 hardness ranges from 248 HB (Brinell Hardness) to 341 HB, depending on the heat treatment process applied to it.

AMS 5834 Heat treatment

Heat treatment enhances the metal’s mechanical performance, including its hardness and strength. The process involves heating the alloy to a specific temperature, holding it for some time, and then cooling it off. AMS 5834 can undergo two heat treatments: Solution annealing and Age-hardening.


As you’ve learned from this comprehensive guide, AMS 5834 offers outstanding corrosion resistance, high-temperature performance, and exceptional mechanical properties. The nickel-chromium alloy’s physical and mechanical properties make it a popular choice in various industries. When properly heat treated, AMS 5834 exhibits remarkable mechanical performance, making it a reliable and dependable metal. Whether you’re in the aerospace or marine industry, AMS 5834 is a perfect fit for a broad range of critical applications.

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