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2507 Super Duplex

2507 Super Duplex

Nickel (Ni) - 7 Min
Chromium (Cr) - 25 Min
Molybdenum (Mo) - 4 Min
Iron (Fe) - 61.4 Balance
Manganese (Mn) - 1.2 Min
Other

Key

Nickel
Copper
Chromium
Aluminum
Molybdenum
Iron
Titanium
Manganese
Cobalt
Other
  • Nickel (Ni) 7 Min
  • Chromium (Cr) 25 Min
  • Molybdenum (Mo) 4 Min
  • Iron (Fe) 61.4 Balance
  • Manganese (Mn) 1.2 Min
  • Carbon (C) .03 Min
  • Silicon (Si) .8 Min
  • Phosphorus (P) .015 Min
  • Sulfur .015 Min

UNS S32750

Materials with exceptional strength and corrosion resistance are crucial in harsh industrial environments. Duplex 2507 is an advanced nitrogen-strengthened alloy that combines high mechanical strength with outstanding corrosion resistance, making it the material of choice in challenging conditions. At Nickel Systems, we provide high-quality 2507 Super Duplex stainless steel fasteners and components. Our extensive expertise, vast inventory and zero lead time enable us to supply precise solutions for your projects.

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Summary

  • Environment:
    Moderately Corrosive: Acids & Chemicals
  • Temperature Limit:
    570 °F / 299 °C
  • Ultimate Tensile (Typical):
    125 ksi / 862 mpa

Specifications & Technical Data

If your question isn’t answered below, download the technical data sheet here. Alloy 2507 stands out due to its physical and mechanical properties:

Specifications

  • Bar: ASTM A276

Applications

  • Desalination facilities & water reuse plants
  • Chemical process equipment, including pressure vessels, piping, heat exchangers, & storage tanks
  • Food, beverage, & pharmaceutical  process equipment
  • Offshore oil firewater and process water systems, blast & firewalls, and strake clamps
  • Downhole oil process & control tubing, control & wire lines, band clamps
  • Pulp mill digester & bleach washers
  • Architectural & infrastructure applications, including bridges and dam weirs

Physical Properties

Typical Physical Properties
Density 0.282 lb/in3
Melting Range 2570 – 2660 °F
Poisson’s Ratio 0.3
Electrical Resistivity 0.80 ohm mx10-6

 

Physical Properties of 2507 at High Temperatures
Temperature, °F  68  212  392  572
Coefficient* of Thermal Expansion,  in/in°F x 106  – 7.2 7.5 7.8
Thermal Conductivity, Btu • ft/ft2 • hr • °F  8.6 9.2 9.8 10.4
Modulus of Elasticity Dynamic, psi • 106  29 28.1 27 –

Mechanical Properties

Ultimate Tensile Strength, ksi  116 (min)
0.2% Yield Strength, ksi  80 (min)
Elongation, %  15 (min)
Hardness, HRC  32 (max)

 

Minimum Elevated Mechanical Properties, Plate
Temperature, ° F  212  392  482
Ultimate Tensile Strength, ksi  99 93 91
0.2% Yield Strength, ksi  65 58 55

Corrosion Resistance

Comparative Pitting Resistance
Alloy  PREn  Critical Pitting Temperature (CPT) °F
2507  42 185
2205 35 120
316L 24 64

PREn= Cr% + 3.3*Mo% +16*N% except for UNS S32760 where PREn= Cr% + 3.3*(Mo% + 0.5*W%) + 16*N%

Iso-corrosion Curves, 0.1mm/y in Sulfuric Acid

Iso-corrosion Curves, 0.1mm/y in Sulfuric Acid

Iso-corrosion Curves, 0.1mm/yr in Hydrochloric Acid

Iso-corrosion Curves, 0.1mm/yr in Hydrochloric Acid

 

In-stock

2507 Super Duplex Fasteners

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Bolts & Screws
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Set Screws
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Socket Products
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Vented Products
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Nuts
Washers
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Studs & Rods
U-bolts
Pins & Keys
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Fittings
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What Is 2507 Super Duplex?

Defined by its high chromium (25%), nickel (7%) and molybdenum (4%) content, alloy 2507 is a super duplex stainless steel developed to perform in corrosive conditions. This composition provides superior resistance to pitting, crevice corrosion and chloride stress corrosion cracking, providing reliable operation in environments such as offshore oil production and chemical processing. With strength two to three times greater than standard austenitic grades like 316L, alloy 2507 Super Duplex provides a cost-effective and lightweight alternative for demanding applications.

 

Advantages of Alloy 2507 Super Duplex

The strength and durability of 2507 Super Duplex stainless steel set it apart from other alloys. Its duplex microstructure combines the best features of austenitic and ferritic stainless steels, resulting in a material that withstands extreme conditions.

Using Duplex 2507 can lead to significant cost savings. Its high strength (up to 125 ksi/862 mpa) often allows for thinner sections compared to other materials, reducing overall weight and material costs. Its versatility across various industries makes it a valuable asset for many applications.

Other notable benefits include:

  • Corrosion resistance: It offers exceptional resistance to chloride-induced pitting, crevice corrosion and stress corrosion cracking.
  • Thermal stability: It operates effectively up to 570°F (299°C), maintaining structural integrity and resistance under thermal stress.
  • High energy absorption: It offers excellent impact toughness at high and low temperatures.
  • Weldability: Compatible with multiple welding methods, including gas tungsten arc welding (GTAW), shielded metal arc welding (SMAW), flux cored wire (FCW), plasma arc welding (PAW) and submerged arc welding (SAW), ensuring versatility in fabrication.

Applications of 2507 Super Duplex

2507 Super Duplex finds applications across a wide range of industries:

  • Desalination facilities and water reuse plants.
  • Chemical process equipment, including pressure vessels, piping, heat exchangers and storage tanks.
  • Food, beverage and pharmaceutical process equipment.
  • Offshore oil firewater and process water systems, blast and firewalls and strake clamps.
  • Downhole oil process and control tubing, band clamps, control and wire lines.
  • Pulp mill digester and bleach washers.
  • Architectural and infrastructure applications, including bridges and dam weirs.

 

Types of 2507 Super Duplex Fasteners Available

Nickel Systems offers a comprehensive range of 2507 Super Duplex fasteners to meet diverse industrial needs:

Choosing the Right Fasteners

Selecting the appropriate alloy 2507 Super Duplex fastener is crucial for optimal performance. Some essential considerations include:

  • Application requirements: Consider factors such as load, environmental conditions and temperature to determine the best fastener type.
  • Material compatibility: Ensure that the fastener material complements the materials used in your project to prevent galvanic corrosion.

Leverage the expertise of Nickel Systems’ specialists to identify the most suitable fasteners for your specific needs.

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Check out our 2507 Super Duplex Sample Products

 

Full Thread Stud 2507 Super Duplex Material

 

Lock Nut with a Nylon Insert, 2507 Super Duplex Material

 

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Heavy Hex Nut 2507 Super Duplex Material

 

An orthographic picture of a heavy hex nut 2507 Super Duplex Material

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Industries We Serve

Nickel Systems provides high quality exotic grade materials that hold up in the toughest, most severe heat and corrosive environments. With our large inventory of specialty fasteners in stock, we are always ready to answer the call to serve the most challenging applications.

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Contact Nickel Systems Experts Today

Choosing the right partner for your fastener needs is as critical as selecting the material. At Nickel Systems, we provide top-tier 2507 Super Duplex stainless steel fasteners and expert guidance. Our extensive inventory ensures that hard-to-find items are available for immediate delivery. We offer free consultation and support services to ensure you receive the perfect products for your needs. Contact us online to learn more or request a quote.

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