Leading Manufacturer & Exporter of Pipe Fittings

By IWS Staff

Category: Duplex Steel, K. K. Industries, Stainless Steel

Comparison between Duplex Steel and 316 Stainless Steel No Comments

Comparison between Duplex Steel and 316 Stainless Steel

So, you are looking for the difference between duplex stainless steel and 316-stainless steel. Before grabbing knowledge about those steel, the user or seeker should know what stainless steel is and why it has different types? Stainless Steel is the general name of steel that uses for their corrosion resistance. There are many differences in its kind, but the similarity in every stainless steel includes a low amount of chromium. Stainless Steel is divided into few types, such as Ferritic, Martensitic, Austenitic, and Duplex. As we are considering on Duplex and 316-stainless Steel in this article, both have their specific qualities. It is the reason both are used in a wide range of applications in different industries.

Duplex Stainless Steel: Duplex Stainless Steel contains two-phase of microstructure consists of grain that is ferritic and austenitic stainless steel. As it has the capability of cooling to room temperature, half of the ferritic grains convert to austenitic grains. When duplex steel starts melting, it solidifies from liquid state to the ferritic phase.

316 Stainless steel:This grade of stainless steel comes under the austenitic form of stainless steel. 316 stainless steel is known for its 2-3% molybdenum content. Molybdenum is the reason that makes the metal stronger or gives resistance to corrosion and to beat elevated temperature.

Difference between Duplex Steel & 316 Stainless Steel:

  • As compared to 316 stainless steel, duplex alloys have more resistance to chloride stress corrosion cracking. 
  • Duplex steel is more robust than austenitic or 316 stainless steel grades. It also formable under pressure and provide excellent hardiness. 
  • Duplex stainless steel has a lower level of molybdenum and nickel that makes its price low or budget-friendly.
  • Another difference between a duplex and 316-stainless steel is austenitic, or 316-stainless steel contains 18% chromium and 8% nickel whereas, Duplex contains 18-28% of chromium and 4.5-8% of nickel.

How it relates to Energy Industries? Stainless Steel is one of the most significant metals that have many beneficial properties for the power and energy industries. Among all qualities, the corrosion resistance capacity of stainless steel is very much needed in this field in any environment. Another most useful ability of stainless steel in the power energy world is when dealing with electrical components; it can transfer heat, whether it is a matter of high temperatures and extreme pressure. From traditional coal industries to renewable energy industries, it is being used. These are also a reason stainless steels are known as pressure tubes, transformer enclosures, heat exchangers, and more. For more information on different types of stainless steel, contact us.

Share this Post!

Leave a Reply