Everything you need to know about Duplex 2205 Fasteners

Everything you need to know about Duplex 2205 Fasteners

Everything you need to know about Duplex 2205 Fasteners

Everything you need to know about Duplex 2205 Fasteners

Duplex 2205 Fasteners are a speciality fastener made from duplex stainless steel material. These fasteners offer superior corrosion resistance, mechanical strength, and weldability. For applications requiring extreme environments and harsh conditions, Duplex 2205 fasteners are ideal for oil & gas-related operations, chemical process equipment, marine equipment, general fabrications and more. They also feature good formability and higher yield strength than traditional austenitic stainless steel grades. Furthermore, these speciality fasteners are more cost-effective than traditional alloys in many scenarios due to their greater fatigue strength – making them an attractive choice in the construction industry.

What are Duplex 2205 Fasteners?

Duplex 2205 Fasteners are industrial fasteners made from steel and chromium-nickel alloy. They are extremely corrosion-resistant, making them an ideal choice for harsh environments. The unique combination offers strength that is twice as strong as other stainless materials, such as 316 and 304. These fasteners can be used in applications where cost, performance, durability, or safety are important considerations. Due to their superior material properties, common industries that benefit from Duplex 2205 Fasteners include chemical processing plants, power generation plants, saltwater piers or jetties, food processing facilities, and medical device production operations.

Characteristics of Duplex 2205 Fasteners

Duplex 2205 fasteners are designed to be extremely strong and corrosion-resistant. These fasteners are composed of a two-phase, austenitic-ferritic structure comprising 22% chromium, 3% molybdenum, and 5-6% nickel alloy. This combination creates a superior strength with twice the yield strength of common austenitic and outstanding resistance to localized corrosion such as pitting or crevice corrosion. The high chromium content in Duplex 2205 provides excellent oxidation and general corrosive resistance due to its ability to form an even more protective passive oxide layer on its surface. Additionally, these fasteners offer excellent stress corrosion cracking/creep rupture properties, making them suitable for use in applications requiring increased tension and oxidation resistance.

Applications of Duplex 2205 Fasteners

Duplex 2205 fasteners are an alloy of austenite and ferrite stainless steel. This combination provides exceptional strength, pitting and crevice corrosion resistance, stress corrosion cracking resistance, and excellent weldability and formability. As such, this type of fastener is ideal for a wide range of applications, including marine environments such as saltwater tanks & ships; transportation including pressure vessels, oil rigs & pipelines; food processing equipment; flue gas desulfurization systems (FGD); chemical storage tanks and much more. Moreover, they are resistant to chloride-ion stress corrosion cracking, making them suitable for many other industrial uses where higher levels of corrosive elements may be present.

Maintenance and Care of Duplex 2205 Fasteners

To ensure the optimum performance of Duplex 2205 Fasteners, it is essential to maintain and care for them regularly. One of the best ways to do this is to prevent exposure to harsh chemicals and environments. Additionally, they should be cleaned and lubricated regularly to prevent galling and corrosion. Furthermore, It is recommended that you replace fasteners with signs of wear and tear.

Choosing the right Duplex 2205 Fasteners

When selecting the right Duplex 2205 Fasteners for your project, it is essential to consider factors such as temperature, pressure, and environment. Standard grades of Duplex 2205 fasteners may only be suitable for some applications, and in such cases, special grades must be used.


Duplex 2205 Fasteners are renowned for their strength, durability, and resistance to corrosion, making them an ideal solution for applications in harsh environments. These fasteners have benchmarked their quality and efficiency in offshore oil and gas, chemical processing, and marine engineering industries. Maintenance of these fasteners is essential to enhance their lifespan and performance. Choosing the right grade of Duplex 2205 fasteners is essential to ensure that they are suitable for the application. Hopefully, this article gave you a basic understanding of Duplex 2205 Fasteners, their characteristics, uses, maintenance, and considerations while selecting them.

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Global Steel is a significant manufacturer and exporter of all ferrous and non-ferrous metals. As a pioneer and leader in the industry, Global Steel is at the forefront of technology and research.

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