ThePipingMart Blog Grades AMS 5574 Stainless Steel – Composition, Properties, and Uses

AMS 5574 Stainless Steel – Composition, Properties, and Uses

AMS 5574

AMS 5574 is a high-temperature stainless steel commonly used in industrial applications. It is known for its exceptional resistance to oxidation and corrosion at high temperatures and its excellent strength and toughness. If you plan to use AMS5574 in manufacturing, it is important to understand its composition, physical properties, mechanical properties, hardness, and heat treatment process. This blog post will look closely at AMS 5574 and provide everything you need to know about this impressive material.

What is AMS 5574?

AMS 5574 (also known as 309 Stainless Steel) is made from nickel, chromium, and molybdenum, giving it impressive durability. Whether you’re an engineer, scientist, or just a curious individual, it’s fascinating to explore the unique features of materials like AMS 5574 that make them crucial to various industries.

What Form Is AMS 5574 Available at Piping Mart?

  • Nuts
  • Bolts
  • Tubing
  • Channels
  • Fasteners
  • Electrodes
  • Pipe Fittings

AMS 5574 Composition

AMS 5574 material is a type of austenitic stainless steel. It has a chemical composition of 17-19% chromium, 9-12% nickel, and a low carbon content of 0.08% or less. The presence of these elements makes AMS5574 highly resistant to corrosion and oxidation at high temperatures. It also contains molybdenum and titanium, which improve its strength and toughness even further.

Element Content (%)
Iron, Fe 60
Chromium, Cr 23
Nickel, Ni 14
Manganese, Mn 2
Silicon, Si 1
Carbon, C 0.20
Phosphorous, P 0.045
Sulfur, S 0.030

AMS 5574 Physical Properties

AMS 5574 plate has several impressive physical properties, making it a popular material in high-temperature applications. It has a density of 7.9 g/cm³ and can withstand temperatures up to 1150°C. AMS 5574 also has a high melting point of 1398°C, which makes it suitable for use in furnaces, boilers, and other high-temperature environments.

Properties Metric Imperial
Density 8 g/cm3 0.289 lb/in³
Melting point 1455°C 2650°F

AMS 5574 Mechanical Properties

AMS 5574 material has excellent mechanical properties, including high tensile strength, yield strength, and elongation. Its tensile strength is around 590 MPa, while its yield strength is approximately 240 MPa. It also has a high extension of 50% or more, which makes it resistant to cracking and deformation under stress.

Properties Metric Imperial
Tensile strength 620 MPa 89900 psi
Yield strength (@ strain 0.200%) 310 MPa 45000 psi
Izod impact 120 – 165 J 88.5 – 122 ft-lb
Shear modulus (typical for steel) 77 GPa 11200 ksi
Elastic modulus 200 GPa 29008 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Elongation at break (in 50 mm) 45% 45%
Hardness, Brinell 147 147
Hardness, Rockwell B 85 85
Hardness, Vickers (converted from Rockwell B hardness) 169 169

AMS 5574 Thermal Properties

Properties Metric Imperial
Thermal expansion co-efficient (@ 0-100°C/32-212°F) 14.9 µm/m°C 8.28 µin/in°F
Thermal conductivity (@ 0-100°C/32-212°F) 15.6 W/mK 108 BTU in/hr.ft².°F

AMS 5574 Equivalent

ASTM A473 ASME SA403 ASTM A409 MIL-S-862
ASTM A479 ASME SA409 ASTM A511 SAE J405 (30309)
DIN 1.4828 ASTM A312 ASTM A554 SAE 30309

AMS 5574 Uses

AMS 5574 is used in various industrial applications, particularly those requiring high-temperature and corrosion resistance. It is commonly used in the aerospace, chemical processing, and power generation industries, as well as in furnace components, heat exchangers, and exhaust systems. It is also used to produce gas turbines and jet engine components.

AMS 5574 Hardness

AMS 5574 has a Rockwell hardness of approximately B80, which is relatively high for stainless steel material. Its hardness makes it particularly resistant to wear and tear and deformation under load. This property can be further improved through heat treatment, which we will discuss in the next section.

AMS 5574 Heat treatment

AMS 5574 sheet can be heat-treated to further improve its hardness, strength, and toughness. The most commonly used heat treatment process for AMS 5574 is solution annealing and quenching. This involves heating the material to a specific temperature range, holding it at that temperature for a certain time, and then quenching it in water or oil to cool it rapidly. This process produces a uniform microstructure and improves the material’s hardness, strength, and toughness.


AMS 5574 material is a high-temperature stainless steel that is known for its exceptional resistance to oxidation and corrosion, as well as for its excellent strength and toughness. It is widely used in many industries requiring high temperature and corrosion resistance. You can decide whether this material suits your manufacturing needs by understanding its composition, physical properties, mechanical properties, hardness and heat treatment process.

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