Super Duplex (2507 Stainless Steel) is the true marine grade stainless as it is 100% corrosion resistant in salt water (it has a minimum PREN value of 41) and can withstand even the harshest environments. These make them the best coastal fasteners around!

Super Duplex 2507 features

• Can be specified for sea water piling applications in H6 timber
• High strength (800 - 1000 MPa tensile strength)
• Extreme corrosion resistance and has a minimum PREN Value of 41, far higher than 316 Stainless Steel
• Ideal for coastal construction such as piers, sea walls and pilings/footings
• Other Super Duplex 2507 Stainless items can be made to order

Super Duplex 2507 Available Products

*Please contact us for enquiries

Bolt & Set Screw Bolt*

Hex Socket Cap Screw*

All Thread Rod & Studs

Square Washers

Round Washers

Spring Washers

Hex Nuts

Nylon Locking Nuts

Dome or Round Nuts

PREN Chart

Super Duplex Stainless Steel Blog

Super Duplex Article

Coupling Nuts

Lock Nuts (Half Nuts)

Bolt & Set Screw Bolt*

Hex Socket Cap Screw*

All Thread Rod & Studs

Square Washers

Round Washers

Spring Washers

Hex Nuts

Nylon Locking Nuts

Dome or Round Nuts

PREN Chart

Super Duplex Stainless Steel Blog

Super Duplex Article

Coupling Nuts

Super Stainless

Corrosion Resistance - PREN Values

Tensile Comparison Chart