Shaped, Flat, Square, Round, Fine Wire, Plated and Un-plated
ASTM A240

Duplex Alloys 2507 Alloy Description

Duplex 2507 is a super duplex stainless steel with high strength and good corrosion resistance. It has excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion. The high chromium, molybdenum and nitrogen levels provide excellent resistance to pitting, crevice and general corrosion. The impact strength is also high. Duplex 2507 is not recommended for applications which require long exposures to temperatures above 600°F (316°C). Both toughness and corrosion resistance can be reduced.


Applications

Screens and other components for the pulp and paper industry
Well screens for oil and gas industry
Marine applications
Components for the chemical processing industry

Chemistry

Carbon: 0.03 max
Manganese: 1.2 max
Phosphorus: 0.035 max
Sulfur: 0.020 max
Silicon: 0.80 max
Chromium: 24.00 – 26.00
Nickel: 6.00 – 8.00
Molybdenum: 3.00 – 5.00
Nitrogen: 0.24 – 0.32
Copper: 0.50 max
Iron: Balance

Physical Properties

Density: 0.280 lbs/in³, 7.75 g/cm³

Thermal Conductivity: BTU-ft/hr/ft²/F (W/m-°K)
At 68-212ºF (20-100ºC): 9.0 (17.0)

Mean Coefficient of Thermal Expansion: in/in/°F (μm/m•K)
32-212°F: 7.2 x 10-6 (13)

Modulus of Elasticity: KSI (MPa)

29.0x 10³ (200 x 10³) in tension
Melting Point: 2570/2660°F (1410/1460°C)

Mechanical Properties at Room Temperature

Annealed Typical

Ultimate Tensile Strength: 116 KSI min (800 MPa min)
Yield Strength: (0.2 % offset) 80 KSI min (551 MPa min)
Elongation: 15% min
Hardness: Rc32 max

Properties Tempered

Duplex 2507 can be cold rolled to achieve the temper properties required by specific customers and/or manufacturing requirements. Contact Ulbrich Wire for details.

Additional Properties

Corrosion Resistance

Refer to NACE (National Association of Corrosion Engineers) for recommendations.

Standard Wire Finishes

Extra Clean: Extra clean is also referred to as “bright annealed” or “bright annealed and cold rolled”
Grease (round wire only): Drawn in a heavy grease produces an “Ultra bright” finish for decorative applications
Soap (round wire only): Soap is used as a lubricant in the drawing process and is not removed. It acts as a lubricant during customer part forming operation. A soap finish is available in tempered products.
Plated: Many plating options are available.
∗Special finishes are available: Contact Ulbrich Wire Sales with special finish and plating requests

Forms

Continuous Coils
Cut to length
Precision cutting

Heat Treatment

Duplex 2507 Cannot be hardened by heat treatment

Welding

For best results refer to: SSINA’s “Welding of Stainless Steels and Other Joining Methods”


Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels and Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the ‘applications’ noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.


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