ThePipingMart Blog Grades AMS 5870 Inconel Alloy – Composition, Properties, and Uses

AMS 5870 Inconel Alloy – Composition, Properties, and Uses

AMS 5870

When choosing the right material for a specific application, knowledge is power. AMS5870 is a high-strength, low-alloy steel with various uses across various industries. But what is AMS 5870 made of? How does it perform under different conditions? In this ultimate guide, we will dive deep into the composition, physical and mechanical properties, and heat treatment of AMS5870. We will also explore its uses and hardness level. By the end of this article, you will thoroughly understand one of the most versatile materials in the market.

What is AMS 5870?

AMS 5870 (also known as Inconel 601 Alloy) is an aerospace-grade stainless steel alloy highly sought after for its superior strength and durability. It is often used in aeronautical applications where high performance is paramount. Its unique chemical composition provides the following:

  • Resistance to corrosion and high temperatures.
  • Making it an ideal material for various components in aircraft engines.
  • Exhaust systems.
  • Other critical parts.

AMS5870 is undoubtedly a top choice for engineers and manufacturers in the aerospace industry looking for reliable and high-quality materials to build their aircraft.

What Form Is AMS 5870 Available at Piping Mart?

  • Nut
  • Bar
  • Bolt
  • Pipe
  • Screw
  • Tubing
  • Valves
  • Washers
  • Flanges
  • Fasteners
  • Electrodes
  • Stud Bolts
  • Sheet Plates
  • Pipe Fittings
  • Forged Fitting
  • Instrumentation Fittings

AMS 5870 Composition

AMS 5870 is a low-carbon, nickel-chromium-molybdenum steel with a maximum carbon content of 0.15%. It also contains small amounts of other elements like vanadium, boron, and nitrogen. Nickel and chromium provide excellent corrosion resistance, while molybdenum contributes to its high strength and toughness. Combining these elements makes AMS 5870 suitable for applications requiring high-strength, corrosion-resistant, and fatigue-resistant materials.

Elements Contents (%)
Nickel, Ni 58-63
Chromium, Cr 21-25
Iron, Fe 15
Copper, Cu  1.0
Manganese, Mn  1.0
Carbon, C  1.0
Silicon, Si  1.0
Aluminum, Al 0.80-1.70
Nitrogen, N 0.020-0.070
Zirconium, Zr 0.070-0.25
Sulfur, S  0.015

AMS 5870 Physical Properties

AMS 5870 has a density of 7.85 g/cm3. Its melting point is around 1450°C, with a thermal expansion coefficient of 11.7 μm/m°C. It exhibits good machinability and weldability, making it easy to work with. AMS 5870 is also magnetic and can be easily magnetized.

Properties Metric Imperial
Density 8.11 g/cm³ 0.293 lb/in³
Melting point 1301-1368°C 2374-2494°F

AMS 5870 Mechanical Properties

AMS 5870 has excellent mechanical properties. Its ultimate tensile strength can reach up to 1500 MPa, and its yield strength can go as high as 1300 MPa. Its elongation at break is around 12%, which indicates its ductility. AMS 5870 also has a high fatigue resistance, which makes it ideal for applications that require cyclic loading.

Mechanical Properties Metric Imperial
Tensile strength (annealed temper) 586-689 MPa 85000-100000 psi
Yield strength (@ strain 0.200%, annealed temper) 207-345 MPa 30000-50000 psi
Elongation at break 35-55% 35-55%

AMS 5870 Equivalent

  • W.NR 2.4851
  • UNS N06601
  • AWS 011
  • ASTM B166

AMS 5870 Uses

AMS 5870 has a wide range of uses across various industries. It is often used in the aerospace industry for critical components that require high strength, fatigue resistance, and corrosion resistance. The oil and gas industry also uses it for drilling equipment and valves. AMS 5870 has found its way into the automotive industry for engine components and suspension parts. Other applications include gears, shafts, springs, and fasteners.

AMS 5870 Hardness

AMS 5870 has a hardness level that varies depending on its heat treatment. It has a hardness level of around 400 HB in its untempered condition. However, after a quench and temper, the hardness level can reach up to 600 HB.

AMS 5870 Heat treatment

AMS 5870 can undergo different heat treatment processes to enhance its properties. The most common method is quenching and tempering. During this process, the steel is heated to a specific temperature, held for a specific time, and quenched in oil or water. The quenched steel is tempered at a lower temperature to achieve the desired hardness and strength level.


AMS 5870 is a powerful material with excellent properties that are ideal for high-stress applications. Its low carbon content, combined with nickel, chromium, and molybdenum, makes it resistant to corrosion and fatigue. Its wide range of uses in different industries showcases its versatility and adaptability. Understanding the composition, physical and mechanical properties, and heat treatment of AMS 5870 is essential to make informed decisions about its application in specific scenarios. Considering all the factors, you can choose the right material for your project and ensure optimal performance.

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