Super Duplex 2507 Screws

Wisine Fasteners & Metal has the capability to manufacture bolts & Nuts,special screws and special profile customized for your company.
Special tooling can be created to produce nonstandard dimensions or with your company’s name and/or logo.
Duplex 2205 and Super Duplex 2507 stainless steel screws are characterized by their high yield strength, which is twice that of the annealed yield strength of typical austenitic stainless steels, like 304 and 316 stainless steel screws. Because of this, Duplex 2205 and Super Duplex 2507 steel are some of the most common grades of duplex used for screws with Super Duplex 2507 screws being the more corrosion resistant grade of the two.
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Product Details

Pan Head Screws3

Super Duplex 2507 Screws

1、Duplex 2507, which is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel. This alloy is designed for applications which require exceptional strength and corrosion resistance; examples include applications in chemical processing, petrochemical, and seawater equipment. The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity and a low coefficient of thermal expansion. The high chromium, molybdenum, and nickel levels provide excellent resistance to pitting, crevice, and general corrosion.

2、Super Duplex 2507 screws improved corrosion resistance lends itself well too applications prone to stress-corrosion cracking, crevice corrosion, pitting, erosion and general corrosion. Because of the properties of Duplex and Super Duplex stainless steel screws are often used in chemical processing, petrochemicals, power industry and seawater equipment.


  • High Strength - About 2x stronger yield than 316 stainless steel

  • Super Duplex - Decent general corrosion & cracking resistance

  • Usage of both Duplex and Super Duplex stainless steel should be limited to temperatures below 570° F as extended elevated temperature exposure can embrittle this material.

Common Applications of 2507

  • Oil and gas industry equipment

  • Offshore platforms, heat exchangers, process and service water systems, fire-fighting systems, injection and ballast water systems

  • Chemical process industries, heat exchangers, vessels, and piping

  • Desalination plants, high pressure RO-plant and seawater piping

  • Mechanical and structural components, high strength, corrosion-resistant parts

  • Power industry FGD systems, utility and industrial scrubber systems, absorber towers, ducting, and piping

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