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alloy 2507 sheet.


Strip, Coil, Foil, Wire, ASTM A240


Oil and gas industry equipment, off-shore platforms, heat exchangers, chemical process industry, vessels, piping, desalination plants.

Duplex Alloy 2507 Description

Alloy 2507 is a super duplex stainless steel with 25% chromium, 4% molybdenum and 7% nickel. 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. Alloy 2507 is not recommended for applications which require long exposures to temperatures above 570°F because of the risk of a reduction in toughness.


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)


Coil – Strip, Foil, Ribbon
Wire – Profile, Round, Flat, Square

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

2507 can be cold rolled to various tempers. Contact Ulbrich Technical Service for additional information

Additional Properties

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

#1–Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required.
#2D–Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process.
#2B–Smooth finish produced by cold rolling, annealing and descaling. A light cold rolling pass is added after anneal with polished rolls giving it a brighter finish than 2D.
#BA-Bright annealed cold rolled and bright annealed
#CBA-Course bright annealed cold rolled matte finish and bright anneal
#2-Cold Rolled
#2BA–Smooth finish produced by cold rolling and bright annealing. A light pass using highly polished rolls produces a glossy finish. A 2BA finish may be used for lightly formed applications where a glossy finish is desired in the formed part.
Polished – Various grit finish for specific polish finished requirements
*Not all finishes are available for all alloys – Contact Ulbrich Sales for more information

Wire Finishes
XC-Extra clean. Bright annealed or bright annealed and cold rolled
Grease-Ultra bright finish for decorative applications
Soap-Soap is not removed from tempered wire to act as a lubricant
*Contact Ublrich Wire for custom wire finishes

Heat Treatment
2507 Cannot be hardened by heat treatment


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