ThePipingMart Blog Grades AMS 5593 Stainless Steel – Composition, Properties, and Uses

AMS 5593 Stainless Steel – Composition, Properties, and Uses

AMS 5593

AMS5593 is a popular standard that outlines the physical and mechanical properties of precipitation-hardening stainless steel and heat-resistant steel. It is among the few aerospace-grade steel alloys with outstanding strength, toughness, and durability, making it an indispensable material in various aerospace applications. This article will explore the composition, physical and mechanical properties, heat treatment, and uses of AMS 5593.

What is AMS 5593?

AMS 5593 (also known as 333 Stainless Steel) is a high-temperature alloy known for its superior strength and resistance to corrosion. It primarily comprises nickel, iron, molybdenum, titanium and chromium. This alloy can maintain its mechanical properties at temperatures up to 1300 °F (704 °C) and can withstand temperatures up to 1800°F (982°C). Its toughness makes it ideal for various aerospace applications, such as engine components and blades.

AMS 5593 Composition

AMS5593 contains a high percentage of chromium, nickel, aluminium, and titanium. The alloy also contains molybdenum, copper, and manganese, which improves the strength and resistance to corrosion and high-temperature oxidation. The presence of titanium and aluminium in the alloy promotes its precipitation-hardening properties.

Element Content (%)
Nickel, Ni 44 – 47
Chromium, Cr 24 – 27
Molybdenum, Mo 2.5 – 4
Cobalt, Co 2.5 – 4
Tungsten, W 2.5-4
Manganese, Mn 2
Silicon, Si 0.75
Carbon, C 0.08
Sulfur, S 0.03
Phosphorous, P 0.03
Iron, Fe Balance

AMS 5593 Physical Properties

AMS 5593 has outstanding physical properties that make it a suitable material for aerospace applications. It has a density of 7.81 g/cm3 and a melting point of 1390°C. The alloy exhibits excellent resistance to corrosion, oxidation, and high-temperature environment, which makes it an ideal material in jet engines, exhaust manifolds, and other high-temperature applications.

AMS 5593 Mechanical Properties

AMS 5593 is known for its remarkable mechanical properties, which make it a popular aerospace-grade alloy. The alloy has a tensile strength of 140-170 ksi, a yield strength of 135-155 ksi, and an elongation of 10%. In addition, it has high fatigue strength, excellent wear resistance, and hardness.

Properties Metric Imperial
Tensile strength 738 MPa 107000 psi
Yield strength 324 MPa 47000 psi
Elongation at break 48% 48%

AMS 5593 Uses

AMS 5593 finds usage in various aerospace applications, including jet engines, aircraft frames, exhaust manifolds, and landing gears. It’s also used in oil and gas production equipment, chemical processing plants, and nuclear power plants.

AMS 5593 Hardness

AMS 5593’s hardness is largely dependent on the heat treatment process. The alloy has a hardness range of 28-36 HRC when heat-treated and aged. It can also undergo cold work hardening to achieve higher hardness levels, which makes it suitable for high-stress applications.

AMS 5593 Heat Treatment

Heat treatment is essential to processing AMS 5593 alloy for specific manufacturing applications. The heat treatment involves a solution annealing treatment to obtain a uniform structure, followed by ageing at an elevated temperature for precipitation hardening. The process enhances the alloy’s mechanical and physical properties, including resistance to corrosion, oxidation, and high-temperature environments.


AMS 5593 ,material is a popular aerospace-grade alloy with outstanding physical and mechanical properties, including high strength, toughness, and durability. Its unique composition and heat treatment process makes it ideal for various aerospace and industrial applications in high-stress and high-temperature environments. Understanding every aspect of AMS 5593 is essential to ensuring the alloy’s optimal application performance and advancing technological advancements in the industry.

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