ThePipingMart Blog Grades AMS 5569 Stainless Steel – Composition, Properties, and Uses

AMS 5569 Stainless Steel – Composition, Properties, and Uses

AMS 5569

Have you ever heard about AMS 5569? If not, then let me introduce you to this unique material. AMS 5569 is a Nickel-Chromium-Molybdenum-Columbium alloy that is ultra-resistant to high temperatures and corrosion and has great mechanical properties. This material is widely used in aerospace, petrochemical, and nuclear industries where high heat resistance is required. This blog post will dive deep into AMS 5569 material’s composition, physical and mechanical properties, hardness, and heat treatment.

What is AMS 5569?

AMS 5569 (also known as 304 Stainless Steel) is a type of stainless steel tubing commonly used in high-temperature environments. This tubing is known for its exceptional strength, corrosion resistance, and durability, making it a popular choice in aerospace, automotive, and oil and gas industries. It is designed to withstand extreme temperatures and harsh conditions, so it is often used in applications such as exhaust systems, turbine engines, and hydraulic systems. Despite its many benefits, AMS5569 is just one of many types of stainless steel tubing available today. Careful consideration should be given to cost, performance, and compatibility with other materials before selecting the best tubing for your specific needs.

What Form Is AMS 5569 Available at Piping Mart?

  • Nut
  • Bar
  • Bolt
  • Pipe
  • Screw
  • Tubing
  • Valves
  • Washers
  • Channels
  • ERW Pipes
  • Flanges
  • Fasteners
  • Electrodes
  • Stud Bolts
  • Sheet Plates
  • Pipe Fittings

AMS 5569 Composition

AMS 5569 comprises 57.5% nickel, 19% chromium, 9.5% molybdenum, 4.1% columbium, 3.0% titanium, 1.5% aluminium, 0.7% cobalt, and less than 1% of manganese, silicon, phosphorus, and sulfur. This unique combination of metals endows AMS 5569 with exceptional corrosion resistance and strength.

Element % Present
Carbon (C) 0.07
Chromium (Cr) 17.50 – 19.50
Manganese (Mn) 2.00
Silicon (Si) 1.00
Phosphorous (P) 0.045
Sulphur (S) 0.015b)
Nickel (Ni) 8.00 – 10.50
Nitrogen (N) 0.10
Iron (Fe) Balance

AMS 5569 Physical Properties

AMS 5569 has a density of 0.299 lb/in³, a thermal conductivity of 8.8 BTU/hr-ft-°F, and an electrical conductivity of 10-10.5% IACS. Moreover, AMS 5569 has a maximum service temperature of around 2100°F.

Property Value
Density 8,000 Kg/m3
Melting Point 1450 °C
Thermal Expansion 17.2 x 10-6 /K
Modulus of Elasticity 193 GPa
Thermal Conductivity 16.2W/m.K
Electrical Resistivity 0.072 x 10-6 Ω .m

AMS 5569 Mechanical Properties

The alloy AMS 5569 tubes possesses excellent mechanical properties. Its tensile strength varies from 135 ksi (kilopounds per square inch) to 190 ksi at room temperature, while its yield strength varies from 65 ksi to 140 ksi depending on the heat treatment process. AMS 5569 also exhibits excellent fatigue resistance, toughness, and flexibility.

Property Value
Comprehensive Strength 210 MPa
Proof Stress 210 Min MPa
Tensile Strength 520 – 720 MPa
Elongation 45 Min%

AMS 5569 Equivalents













AMS 5569 Uses

AMS 5569 tubing has many applications due to its heat resistance properties. Various industries use this material in high-temperature applications, including heat shields, combustion chambers, turbine engines, and other aerospace applications. Petrochemical plants use AMS 5569 in high-temperature heat exchangers, gas turbine engine components, and nuclear reactors.

AMS 5569 Hardness

AMS 5569 has an average hardness rating of about 35 HRC (Rockwell Hardness Scale C). Hardness is an important measure when it comes to the durability of this alloy in high-stress applications, and AMS 5569 exhibits excellent strength.

AMS 5569 Heat treatment

The heat treatment process creates and enhances various mechanical properties required in different applications. AMS 5569 sheets can be heat-treated through solution treatment or precipitation hardening. Solution treatment involves heating the metal from 2150°F to 2250°F and cooling it rapidly. Precipitation hardening involves heating the metal from 1500°F to 1775°F for several hours and then air cooling to room temperature.


AMS 5569 material is an ultra-resistant material with unique mechanical and physical properties, making it an excellent choice for high-temperature applications. Its excellent corrosion resistance, strength, and durability make it a favourite choice in aircraft, petrochemical, and nuclear industries. The combination of different metals results in exceptional heat resistance properties, making it ideal for use in high-stress applications. Hardness and heat treatment are crucial in choosing an appropriate material and its application. With its fantastic properties, AMS 5569 is undoubtedly a valuable material to have in a high-stress environment.

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