ThePipingMart Blog Grades AMS 5501 Stainless Steel – Composition, Properties, and Uses

AMS 5501 Stainless Steel – Composition, Properties, and Uses

AMS 5501

The world of stainless steel can be confusing, with countless grades, types, and uses. One of the grades you may have heard of is AMS 5501, a standard specification for chromium and chromium-nickel stainless steel sheet, strip, and plate. In this blog post, we’ll dive deep into this grade and discuss everything you need to know, from its composition and physical properties to its uses and heat treatment.

What is AMS 5501?

AMS 5501 (also known as 303 Stainless Steel) may sound like a complicated acronym, but it’s actually a specific type of stainless steel grade. This particular grade is known for its excellent resistance to corrosion and its high ductility, making it a popular choice for many industrial applications, such as wire forming, springs, and even kitchen equipment. So, not only can AMS5501 withstand extreme conditions, it can also be shaped and formed to meet a variety of needs. Whether you’re working on a major construction project or simply looking for a durable material to use in your home, AMS5501 is definitely worth considering.

What Form is AMS 5501 Available at Piping Mart?

  • Nuts
  • Tubing
  • Flanges
  • Forged Fittings
  • Fasteners
  • Sheet Plates
  • Pipe Fittings

AMS 5501 Composition

Composition of AMS 5501: AMS 5501 is an austenitic chromium-nickel stainless steel grade that contains around 16-18% chromium and 6-8% nickel. It also has small amounts of manganese, silicon, phosphorus, and sulfur. The addition of these elements enhances its corrosion resistance and improves its weldability. This grade is commonly used in the food processing and chemical industries, where resistance to corrosives is essential.

% Cr Ni C Si Mn P S Mo Fe
5501 min: 17.0
min: 8.0
max: 10.0
0.15 min 0.75 balance

AMS 5501 Physical Properties

Physical Properties of AMS 5501: AMS 5501 exhibits excellent mechanical properties, including high corrosion resistance, good tensile strength, and excellent formability. It has a density of 0.29 lb/in³ (8.03 g/cm³), a melting point of 2600-2750°F (1425-1510°C), and a coefficient of thermal expansion of 9.4 µin/in-°F (16.9 µm/m-°C). Its thermal conductivity is 10.9 BTU/hr/ft²/ft/°F (18.9 W/m-K).

Coefficient of
Thermal Expansion (min/in)-°F
Electrical Resistivity mW-in Thermal Conductivity BTU/hr-ft-°F Melting
at 68 °F at 68 – 212°F at 68 – 932°F at 68 – 1450°F at 68°F at 212°F at 392°F at 752°F at 1112°F at 1472°F at 68 – 212°F
0.29 9.2 10.4 10.9 28.3 30.7 33.8 39.4 43.7 47.6 113.2 2552°F

AMS 5501 Mechanical Properties

This grade of stainless steel has a minimum tensile strength of 75,000 psi (517 MPa) and a minimum yield strength of 30,000 psi (207 MPa). Its elongation at break is 40%, and its Rockwell hardness is B90.

Grade Tensile Strength
ksi (min.)
Yield Strength 0.2%
Offset ksi (min.)
Elongation –
% in
50 mm (min.)
(Brinell) MAX
(Rockwell B) MAX
5501 75 30 35 228

AMS 5501 Equivalents











AMS 5501 Uses

Due to its excellent corrosion resistance and high strength, AMS 5501 is widely used in various applications. It is commonly used in the food processing industry, chemical processing, aerospace, and medical industries. It is also widely used in architectural applications such as roofing, wall cladding, and decorative panels.

AMS 5501 Hardness

The Rockwell hardness of AMS 5501 is B90, which falls in the range of being a relatively soft material. This makes it easily formable and machinable.

AMS 5501 Heat treatment

AMS 5501 can be hardened by cold-working, which increases the material’s tensile strength, yield strength, and hardness. It can also be subjected to annealing, which reduces internal stress and increases its ductility.

AMS 5501 Density

When it comes to the AMS 5501 density, it’s essential to understand this specification’s role in stainless steel. Density, of course, is the term used to describe the mass per unit volume of a material, and it’s a crucial factor to consider when determining the strength and durability of various types of steel. With that in mind, the AMS 5501 density specification sets the standards for what is considered an acceptable density range for certain types of austenitic stainless steel. So, whether you’re working with 301, 302, 304, or any other variation of stainless steel, it’s essential to keep these guidelines in mind to ensure that your finished product is up to par.


So, that’s everything you need to know about AMS 5501 stainless steel. This grade of stainless steel is one of the most versatile and widely used grades thanks to its excellent properties and chemical composition. Whether you’re in the food processing, chemical, aerospace, or medical industry, AMS 5501 has got you covered. Its high corrosion resistance, tensile strength, formability, and machinability are standard specifications you can rely on.

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