ThePipingMart Blog Grades 316H Stainless Steel (UNS S31609) – Composition, Properties, and Uses

316H Stainless Steel (UNS S31609) – Composition, Properties, and Uses

316H Stainless Steel

316H stainless steel is a high-carbon variant of 316-grade stainless steel. It provides improved performance in various applications, including metal fabrication and construction. In this article, we’ll take an in-depth look at the properties and uses of 316H stainless steel to help you determine whether it’s the right choice for your next project.

What Forms is 316H Stainless Steel Available at Piping Mart?

  • 316H Stainless Steel Pipes
  • 316H Stainless Steel Tubing
  • 316H Stainless Steel Pipe Fittings
  • 316H Stainless Steel Forged Fittings
  • 316H Stainless Steel Plates
  • 316H Stainless Steel Valves
  • 316H Stainless Steel Bolts
  • 316H Stainless Steel Channels

316H Stainless Steel Composition

UNS S31609 is composed of molybdenum-bearing austenitic stainless steel developed for elevated-temperature applications. It has excellent corrosion resistance and creep strength. The addition of molybdenum provides greater corrosion resistance against chlorides and other industrial solvents, making it an ideal material for Inconel sheets used to foster a safe and secure environment in construction sites as well as various industrial settings. Its mechanical properties make it highly capable of handling high temperatures, thus making it suitable not just for Inconel sheets but also automotive, pressure vessels, nuclear power plants, heating, and cooling systems, engine exhausts manifolds, etc.

Element 316H
Chromium 16.0 min.-18.0 max.
Nickel 10.0 min.-14.0 max.
Molybdenum 2.00 min.-3.00 max.
Carbon 0.04 – 0.10
Manganese 2.00
Phosphorus 0.045
Silicon 0.75
Iron Balance

316H Stainless Steel Physical Properties

SS 316H is an exceptionally robust Inconel sheet material, boasting great physical properties such as low magnetic permeability and excellent corrosion resistance in a wide variety of conditions. Its high-temperature stability allows it to be used in higher climates without risk of oxidation or scaling. Additionally, its resistance to chlorides and other strong chemicals makes it useful for many chemical processing applications. The alloy offers premium formability and weldability, making fabrication simple and efficient while still providing reliable strength and outstanding durability even with prolonged exposure to extreme temperatures.

316H Stainless Steel Mechanical Properties

316H Material is a commonly used metal, especially in Inconel sheet applications, thanks to its impressive mechanical properties. This metal has superior strength and excellent corrosion resistance, making it an ideal choice for all forms of metalworking. It can withstand temperatures up to 1010 degrees Celsius, making it useful for welding and other fabrication needs. Additionally, 316H stainless steel demonstrates durability even in extreme conditions like high-pressure and high-temperature environments. Its hardness makes it ideal for use with machining and grinding, while its formability gives it flexibility when needed. All these attributes make 316H stainless steel a popular choice in industrial settings.

Yield Strength
.2% Offset
Ultimate Tensile
in 2 in.
psi (min.) (MPa) psi (min.) (MPa) %
30,000 205 75,000 515 40 95 Rockwell B

316H Stainless Steel Specifications

Specifications : ASTM A240 / ASME SA240
Standard : ASTM, ASME and API
Thickness : 4.0mm – 100mm
Specialize : Shim Sheet, Perforated Sheet, B. Q. Profile.
Form : 316H Stainless Steel Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange)
Finish : Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated)
Hardness : Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc.
Grade : SS 316H, (UNS S31609)

316H Stainless Steel Properties

316H stainless steel is a high-carbon version of the traditional 316 grade. The “H” stands for “high carbon,” meaning it has a higher carbon content than other types of 316 stainless steel. This makes it more resistant to corrosion and heat, which gives it superior performance in many applications. It also has excellent weldability and formability properties, making it easy to work with in metal fabrication projects.

316H is a high-carbon stainless steel

316H is high-carbon stainless steel, meaning it has a higher carbon content than 316L. This makes it more resistant to corrosion and pitting and more difficult to weld.

316H has better mechanical properties

316H also has better mechanical properties than 316L, including higher strength and hardness. This makes it ideal for applications where high temperatures are a concern, such as in the petrochemical industry.

316H is non-magnetic

316H is non-magnetic, making it ideal for applications where magnetic properties are a concern, such as in food processing or medical equipment.

316H has good weldability

Despite its high carbon content, 316H has good weldability thanks to its low carbon equivalents. This means that it can be welded using most standard welding methods without requiring special precautions.

316H is available in a variety of forms

316H is available in various forms, including sheet, plate, bar, pipe, and tube.

316H Stainless  Steel Uses

Due to its superior corrosion resistance, 316H SS is ideal for use in marine environments or any situation where exposure to saltwater or other corrosive elements is likely. It’sIt’s also often used in medical equipment due to its resistance to bacterial growth and corrosion-resistance properties. Additionally, due to its strength and durability, it’s commonly used in construction projects such as bridges, buildings, and other infrastructure projects. Finally, its superior malleability makes it perfect for DIY projects like custom kitchen sinks or outdoor furniture.


In conclusion, if you’re looking for a durable material that offers superior corrosion and heat resistance, you should consider using 316H stainless steel on your next project. Its impressive weldability and formability make it easy to work with, while its superior strength makes it ideal for use in construction projects or any situation where exposure to salty air or corrosive elements is likely, whether you’re a professional metal fabricator or an enthusiastic DIYer looking for an upgrade on your next project, consider using 316H stainless steel!

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