ThePipingMart Blog Grades AMS 5573 Stainless Steel – Composition, Properties, and Uses

AMS 5573 Stainless Steel – Composition, Properties, and Uses

AMS 5573

In industrial applications, materials are selected based on their specific properties, such as chemical composition, mechanical properties, and physical properties. One such material that is highly regarded material for its superior performance is AMS 5573. This special steel alloy is used in aerospace, marine, and other industries with critical corrosion and wear resistance. This blog post will delve into AMS 5573, including its composition, physical and mechanical properties, uses, hardness, and heat treatment.

What is AMS 5573?

AMS 5573 (also known as 316 Stainless Steel) is a specification that outlines the requirements for stainless steel tubing used in environments that require resistance to corrosion, high temperatures, and pressure. This type of tubing is commonly used in aerospace, chemical processing, and oil and gas industries. It is vital to ensure that the tubing meets the specific dimensions, tolerances, and mechanical properties outlined in the specification to ensure safe and reliable operation in these demanding applications. With its unique properties, AMS5573 tubing is a trusted solution for high-performance fluid transport systems in some of the world’s toughest environments.

What Form Is AMS 5573 Available at Piping Mart?

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

AMS 5573 Composition

AMS5573 is an austenitic, high-strength steel alloy with high nickel content. It is also known as 316LVM, as it is an upgraded version of 316 stainless steel. The additional molybdenum and increased nickel content provide superior corrosion and wear resistance. The chemical composition of AMS 5573 includes carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, molybdenum, and nitrogen. The chemical composition of AMS5573 is controlled to minimize the occurrence of ferrite in the alloy, ensuring a fully austenitic matrix.

Grade C Mn Si P S Cr Mo Ni N
AMS 5573 Min 0 16.0 2.00 10.0
Max 0.08 2.0 0.75 0.045 0.03 18.0 3.00 14.0 0.10

AMS 5573 Physical Properties

AMS 5573 exhibits excellent physical properties due to its high nickel content, which provides exceptional corrosion and wear resistance. This material has a density of 7.98 g/cm³ and a melting point of 1370-1400 °C. The thermal conductivity of AMS 5573 is lower than other austenitic stainless steels; however, it still provides reasonable heat transfer capabilities. This material is a moderately good conductor of electricity in terms of electrical conductivity.

Grade Density(kg/m3) Elastic Modulus (GPa) Mean Co-eff of Thermal Expansion (µm/m/°C) Thermal Conductivity (W/m.K) Specific Heat 0-100 °C (J/kg.K) Elec Resistivity (nΩ.m)
0-100 °C 0-315 °C 0-538 °C At 100 °C At 500 °C
AMS 5573 8000 193 15.9 16.2 17.5 16.3 21.5 500 740

AMS 5573 Mechanical Properties

AMS 5573 boasts fantastic mechanical properties as well. It has a tensile strength of 650 MPa and a yield strength of 450 MPa, with an elongation of approximately 45%. The alloy also has excellent toughness properties, even at cryogenic temperatures. The coefficient of thermal expansion for AMS 5573 is relatively low, making it virtually immune to thermal stress cracking.

Grade Tensile Str (MPa) min Yield Str 0.2% Proof (MPa) min Elong (% in 50 mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
AMS 5573 515 205 40 95 217

AMS 5573 Uses

AMS 5573 alloy is commonly used in industrial applications requiring excellent corrosion and wear resistance properties. Examples include aerospace, marine, chemical processing, and medical equipment. Due to its excellent performance in corrosive environments, it is often used in pipe fittings, valves, and other components of offshore platforms in the oil and gas industry. It is also used in surgical implants due to its biocompatibility and resistance to body fluid corrosion.

AMS 5573 Hardness and Heat Treatment

AMS 5573 exhibits a standard Rockwell hardness of B90, which is excellent for a high-performance stainless steel alloy. This hardness indicates an excellent balance between strength and toughness. The material can be annealed or worked and heat-treated to improve its properties further. AMS 5573 can be subjected to stress relief annealing, hardening, or solution annealing. Heat treatment aims to remove residual stresses, improve mechanical properties, and increase toughness.


In conclusion, AMS 5573 material is a high-performance austenitic stainless steel alloy with superior corrosion and wear resistance properties. It’s chemical composition, physical and mechanical properties, and exceptional toughness make it ideal for various industrial applications, including offshore platforms, aerospace, marine, and medical equipment. Apart from its biocompatibility, AMS 5573 can also be heat-treated and annealed to improve its properties further, making it an excellent material for demanding industrial applications.

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