ThePipingMart Blog Grades AMS 5560 Stainless Steel – Composition, Properties, and Uses

AMS 5560 Stainless Steel – Composition, Properties, and Uses

AMS 5560

AMS5560 is a popular specification defining seamless corrosion-resistant steel tubing, widely used in various industrial applications. It is a high-quality steel material with excellent physical and mechanical properties required for demanding conditions. This blog post will delve deep into AMS 5560 and explore its composition, physical and mechanical properties, uses, hardness, and heat treatment.

What is AMS 5560?

AMS 5560 (also known as 304 Stainless Steel) is a specification for seamless, corrosion-resistant stainless steel tubing used in high-pressure systems. This type of tubing is commonly used in aerospace, chemical processing, and oil and gas industries due to its exceptional strength and durability. The specification outlines the specific requirements that must be met for the tubing to qualify as AMS5560, including the composition of the steel, the dimensions of the tubing, and the testing that must be conducted to ensure its quality. The demand for high-quality tubing continues to rise in industries where safety, reliability, and efficiency are top priorities, making AMS5560 essential for many applications.

What Form Is AMS 5560 Available at Piping Mart?

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

AMS 5560 Composition

The composition of AMS 5560 comprises chromium, nickel, and molybdenum with small amounts of carbon and other alloying elements. The chromium and nickel provide excellent corrosion resistance, while the molybdenum helps to increase the material’s strength and durability. The carbon content of AMS 5560 is kept low to prevent carbide precipitation, which may reduce the material’s corrosion resistance.

Grade C Mn Si P S Cr Mo Ni N
AMS 5560 min.







AMS 5560 Physical Properties

AMS 5560’s excellent physical properties make it an ideal material for use in high-temperature and corrosive environments. It has a density of 7.98 grams per cubic centimetre (g/cm³), a melting point of 1400 – 1450°C, a thermal conductivity of 14 W/m.K, and a thermal expansion coefficient of 13.3 µm/m°C. The material’s high-temperature resistance makes it perfect for applications requiring high-temperature exposure.

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 5560 8000 193 17.2 17.8 18.4 16.2 21.5 500 720

AMS 5560 Mechanical Properties

AMS5560 also boasts impressive mechanical properties, making it a go-to material for various industrial applications. It has a tensile strength of 760 MPa, yield strength of 345 MPa, and an elongation capacity of 35%. These properties ensure that the material can withstand high-stress conditions and maintain its shape without breaking down.

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50 mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
304 515 205 40 92 201

AMS 5560 Specifications

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
304 S30400 304S31 58E 1.4301 X5CrNi18-10 2332 SUS 304

AMS 5560 Uses

AMS 5560 is used in various industries, including chemical processing, aerospace, marine, and oil and gas. Its superior corrosion resistance enables it to withstand harsh chemicals and marine environments without breaking down. Additionally, its high-temperature resistance allows it to function optimally in high-heat areas, making it a popular choice in aerospace and other industries.

AMS 5560 Hardness

The hardness of AMS 5560 varies depending on the annealing temperature. At temperatures up to 900°C, the material’s hardness ranges from 170 to 240 HB. Annealing the steel at 1050 to 1150°C improves its hardness to 280-320 HB. The material’s hardness makes it perfect for applications requiring high durability and wear resistance.

AMS 5560 Heat treatment

AMS 5560 is usually annealed, quenched, and tempered to improve its hardness and mechanical properties. Annealing the material at temperatures of 1050 to 1150°C, followed by air cooling, improves its toughness and flexibility while increasing its hardness. Quenching and tempering the material at 980°C and 700°C, respectively, help increase its strength, hardness and wear resistance.


AMS 5560 material is a corrosion-resistant steel tubing material with excellent physical and mechanical properties required for high-temperature and corrosive environments. Its superior corrosion and high-temperature resistance make it ideal for use in various industries, including aerospace, marine, and oil and gas. The material’s hardness varies depending on the annealing temperature and can be improved through annealing, quenching, and tempering. Overall, AMS 5560 is a high-quality material that can withstand harsh conditions and provide optimal performance.

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