ThePipingMart Blog Grades 400 Stainless Steel – Composition, Properties, and Uses

400 Stainless Steel – Composition, Properties, and Uses

400 Stainless Stee

Whether you’re an engineer or a material specialist, understanding the properties of 400 series stainless steel is essential. This type of stainless steel is one of the most versatile and widely used alloys in production today, so it’s essential to know its characteristics. Let’s take a look at its physical and chemical properties.

What Forms is 400 Stainless Steel Available at Piping Mart?

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

400 Stainless Steel Composition

400 stainless steel composition is one of the most widely used forms of stainless steel, with other materials such as ferritic, martensitic, and austenitic steels. This combination of alloys creates an incredibly strong material that is known for its ability to withstand corrosion and extreme chemical exposure. It is a highly efficient material and works well in a variety of applications, especially those that require heat-resistant properties. Though there are many other steel compositions on the market, 400 stainless steel composition provides unparalleled benefits thanks to their impressive durability and resistance to corrosion.

400 Stainless Steel Physical Properties

400 series stainless steel is characterized by its ductile strength and malleability. It has high tensile strength and can be formed into various shapes with minimal force. 400 series stainless steel also has excellent corrosion resistance and can withstand extreme temperatures, making it ideal for many industrial applications. This type of stainless steel is relatively lightweight and easy to machine.

400 Stainless Steel Mechanical Properties

SS 400 is a popular choice of Inconel sheeting due to its impressive mechanical properties. This type of steel offers good corrosion resistance, excellent weldability, and improved strength as compared to conventional carbon steels. It can be easily machined and work-hardened, making it an ideal choice for applications where fabrication precision is a necessity. It also performs well in mildly corrosive environments, making it ideal in outdoor settings such as marine installations or places where direct contact with acid rain or saltwater occurs. The 400 series stainless steel’s impressive mechanical properties make it an easy choice for any project requiring quality Inconel sheeting.

400 Stainless Steel Chemical Properties

The chemical composition of AISI 400 series stainless steel sheets varies depending on the alloy but generally contains between 10% – 30% chromium and around 1% carbon content. Chromium helps increase corrosion resistance while also providing excellent heat resistance. The carbon content helps increase the hardness and strength while improving formability. Other elements, such as nickel, may be added to improve specific properties like weldability or machinability.

400 Stainless Steel Properties

Excellent Corrosion Resistance

One of the most important properties of 400 stainless steel is its excellent corrosion resistance. This alloy contains chromium, manganese, silicon, and carbon, which work together to provide superior resistance to a wide range of corrosive environments. Also, 400 stainless steel is resistant to intergranular corrosion, making it an ideal choice for high-temperature applications.

Good Formability and Weldability

400 stainless steel also has good formability and weldability. This alloy can be easily formed and welded using various methods, making it an ideal choice for many applications. Also, 400 stainless steel has good resistance to scaling and oxidation at high temperatures, making it a perfect choice for high-temperature environments.

Good Strength and Toughness

In addition to its excellent corrosion resistance, 400 stainless steel has good strength and toughness. This alloy contains a high percentage of chromium, which provides good strength and hardness. Additionally, 400 stainless steel has good impact resistance and can be heat treated to increase its strength and hardness.


Another advantage of 400 stainless steel is that it is an economical choice for many applications. This alloy is less expensive than other grades of stainless steel, making it an ideal choice for budget-conscious consumers. Additionally, 400 stainless steel is widely available and easily sourced from various suppliers.


SS 400 is also a versatile alloy used in various applications. This alloy is suitable for various industries, including food, chemical, automotive, and construction. Additionally, 400 stainless steel can be used in a variety of household applications, such as sinks, countertops, and appliances

400 Stainless Steel Uses

400 steel  Material is a kind of ferritic stainless steel that contains chromium for better ductility and formability. It is highly resistant to corrosion and oxidation, making it an ideal material for various applications. Its resistance to chloride attack makes it especially useful in chemical processing plants and along the seashore. Its unique properties make 400 stainless steel perfect for building kitchen accessories such as sinks and countertops, medical equipment, automotive parts, energy-related components, and highly decorative items. Due to its unbeatable strength, 400 stainless steel allows architects to push their designs beyond conventional limits while guaranteeing they are durable enough to withstand even the toughest elements of nature.


In conclusion, 400 series stainless sheets of steel are some of the most versatile metal alloys available today due to their physical and chemical properties. They are strong yet malleable, have excellent corrosion resistance, are relatively lightweight, and can withstand extreme temperatures without damage. If you’re looking for a metal alloy that meets your specific requirements, consider using 400 series stainless steel for your next project!

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