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Super Duplex (2507 SS) Fasteners for Engineering & Manufacturing

Super Duplex (2507 SS) Fasteners for Engineering & Manufacturing

Super Duplex (2507 SS) Fasteners for Engineering & Manufacturing

Last Updated: 3/10/22 at 8:36am

Author: Jamie Hunt

Super Duplex 2507 Stainless Steel Engineering

Super Duplex (2507 SS) is 100% corrosion resistant* in saltwater (has a minimum PREN value of 41) and can withstand the harshest environments! See the table below or click the following link to read more about PREN Values.

Super Duplex (2507 SS)

  • High strength (800-1000 MPa tensile strength)
  • Extreme corrosion resistance and has a min PREN value of 41, far higher than 316 SS
  • Ideal for Geothermal, wastewater, oil and gas, coastal construction and chemical processing
  • Other Super Duplex (2507 SS) items can be made to order

Fasteners available in Super Duplex (2507 SS)

*Setscrews & Bolts and Capscrews (contact us for enquiries)


To maintain 100% corrosion resistance to saltwater, please follow the below guidelines when working/handling Super Duplex (2507 SS).

  • Only use tools that have been exclusively used on SS material to avoid cross contamination of carbon steel onto Super Duplex (2507 SS)
  • If Super Duplex (2507 SS) fasteners are worked with high temperature processes such as welding, annealing or cutting with cutting discs, use a pickle/passivating paste on the affected area to reduce the corrosion caused by heating

PREN Values

Stainless Steel PREN Values

NB: The information above is provided as a guide only and Anzor does not accept liability for the application of this information.
For advice about stainless steel contact the Nickel Institute.

About Jamie Hunt

Jamie Hunt is the CEO of Anzor Fasteners Ltd, with 24 years of procurement and supply of Stainless Steel Fasteners and Hardware under his belt. He also has Olympic yachting experience and is a Certified ISSF Stainless Specialist.

Jamie is a member of the New Zealand Stainless Steel Development Association and has written many articles including "The Stainless Steel Guide", "Can you paint stainless steel?" and "Are stainless fasteners OK with treated timber?". Check out Jamie on his LinkedIn profile for more information.

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Click here to download a PDF of our Engineering Catalogue. This catalogue includes stainless fasteners and fittings, marine hardware and construction brackets.

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Click here to download a PDF of our Construction Catalogue. This catalogue includes stainless/galvanized fasteners and fittings, and construction brackets.

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