ThePipingMart Blog Grades AMS 5570 Stainless Steel – Composition, Properties, and Uses

AMS 5570 Stainless Steel – Composition, Properties, and Uses

AMS 5570

AMS 5570 is a popular alloy used in various industries, such as aerospace, oil and gas, and chemical engineering. This alloy has unique properties and characteristics that make it stand out from other materials used in similar applications. If you want to learn about AMS 5570 material, this blog post has everything you need to know. We will cover its composition, physical and mechanical properties, uses, hardness, and heat treatment.

What is AMS 5570?

AMS 5570 (also known as 321 Stainless Steel) is a specification that outlines the requirements for seamless tubing, primarily used in aircraft engines and other high-pressure applications. It is a type of stainless steel tubing that has been tested rigorously to ensure its durability and resistance to corrosion. This tubing is expected to withstand extremely high temperatures and pressures, making it an essential component in the aerospace industry. The specifications that AMS5570 adheres to ensure that the tubing meets the standards necessary for use in critical applications. It is fascinating to think about the incredible amount of testing and engineering behind creating something as seemingly simple as a stainless steel tube. With specifications like AMS5570, the aviation industry would be able to maintain the safety and reliability that it is known for.

What Form Is AMS 5570 Available at Piping Mart?

  • Nut
  • Bolt
  • Pipe Fittings
  • Tubing
  • Valves
  • Flanges
  • Channels
  • Fasteners
  • Electrodes
  • Sheet Plates
  • Forged Fitting
  • Instrumentation Fittings

AMS 5570 Composition

AMS 5570 sheet is a nickel-chromium-molybdenum alloy that contains other elements like tungsten, cobalt, manganese, and iron. The composition of this alloy makes it highly resistant to corrosion and oxidation under high temperatures. It also enhances the strength and toughness of the material, making it an ideal material for high-stress applications.

Element AMS 5570
Carbon 0.08
Chromium 17.0-19.0
Nickel 9.0-12.0
Manganese 2.00
Silicon 0.75
Nitrogen 0.10
Phosphorus 0.045
Sulfur 0.030
Titanium 5(C+N) min / 0.70 max

AMS 5570 Physical Properties

The physical properties of AMS 5570 plate allow it to withstand extreme temperatures of up to 1800°F, making it ideal for high-temperature applications. It also has a high melting point of 2525°F, which makes it highly resistant to melting and deformation under stress. Its density of AMS 5570 is 8.24 g/cm3 is relatively high, making it heavier than other alloys, but its strength and durability make it an excellent material for structural applications.

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (μm/m/°C) Thermal Conductivity (W/m.K) Specific Heat 0-100 °C (J/kg.K) Electrical Resistivity (nΩ.m)
0-100 °C 0-315 °C 0-538 °C at 100 °C at 500 °C
AMS 5570 8027 193 16.6 17.2 18.6 16.1 22.2 500 720

AMS 5570 Mechanical Properties

AMS 5570 material has excellent mechanical properties, such as high tensile and yield strength, making it ideal for high-stress applications. It also has excellent fatigue properties, making it highly durable and resistant to wear and tear. The alloy can be easily machined, welded, and formed into different shapes, making it versatile for various applications.

Proof Stress 0.2% (MPa) 205
Tensile strength (MPa) 515
Elongation A5 (%) 40
Hardness HB: 217
HRB: 95

AMS 5570 Equivalents

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
AMS 5570 S32100 321S31 58B, 58C 1.4541 X6CrNiTi18-10 2337 SUS 321

AMS 5570 Uses

AMS 5570 is widely used in various industries, such as aerospace, oil and gas, and chemical engineering. Its high-temperature resistance and excellent mechanical properties make it ideal for applications such as turbine engines, exhaust systems, and heat exchangers. It is also used in chemical processing industries, exposed to highly corrosive environments.

AMS 5570 Hardness

AMS 5570 has good hardness and can be hardened through heat treatment procedures such as annealing, normalizing, and quenching. This makes it resistant to wear and tear and ideal for applications requiring abrasion resistance. The hardness of AMS 5570 also enhances its strength, allowing it to withstand high-stress applications.

AMS 5570 Heat treatment

AMS 5570 can be heat-treated to improve its mechanical and physical properties, such as hardness, strength, and toughness. This makes it suitable for various application environments, ranging from low- to high-temperature conditions. Heat treatment procedures such as annealing, normalizing, and quenching enhance this alloy’s properties, making it ideal for various applications.


AMS 5570 is a unique nickel-chromium-molybdenum alloy with excellent physical and mechanical properties that make it suitable for high-temperature and high-stress applications. Its resistance to corrosion and oxidation makes it ideal for use in corrosive environments such as the oil and gas industry. It is a versatile material that can be easily machined, welded, and formed into different shapes, making it suitable for various applications. Its hardness and heat treatment capacity make it highly durable and resistant to wear and tear. If you are looking for a material that is strong, durable, and resistant to corrosion and wear, consider using AMS 5570 for your next project.

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