What is Duplex 2507 Fasteners ?

These Duplex 2507 Fasteners have equal concentrations of austenitic as well as ferritic nature in their chemical composition. These fasteners are highly resistant to corrosion-related corrosion pitting and corrosion cracking and are comparatively more preferred than the 300 series fasteners. These fasteners come under the super duplex steel grade.

Duplex 2507 Fasteners have a chemical composition that is composed of 25 percent chromium, 4 percent molybdenum and 7 percent nickel. They can also withstand chlorine bound environments. Therefore, these Duplex 2507 Fasteners are widely used in seawater applications as well as off the shore applications. These fasteners also contain a certain concentration of nitrogen in their alloy, which thus makes them comparatively harder than the other fasteners.


India’s specialist Super Duplex 2507 Bolts & Super Duplex Stud Bolts, Super Duplex Nuts and Bolts, super duplex fasteners Manufacturer India.

Sumit Impex aims at providing the best quality Duplex 2507 Fasteners. These fasteners could be available in different shapes, sizes and dimensions depending upon the user requirements or the specifications provided for the required application. These fasteners can also withstand various acidic mediums.

The chromium, nickel and molybdenum combination helps in improving the mechanical characterization of the alloy and thus improve the quality of the fasteners. These Duplex 2507 Fasteners can be used in an environment bound with elevated temperatures, or an atmosphere that could lead to corrosion or an atmosphere that could create damage with respect to pressure; because of all of the properties that these fasters have, they are used in a large number of industries such as the paper and pulp industries, oil industries, gas industries, etc.

Duplex 2507 Fasteners Specifications

Grade Duplex 2507 Fasteners
Specification ASTM A479 ASME SA479
Standard DIN, ASTM, BS and all International Standards
Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Length 3 mm to 200 mm
Form Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts.
Application Most commonly used in petroleum refineries, Boilers, Heat exchangers, Condensers, Pipelines, Cooling towers, Steam exhausts, Electric generation plants, On occasion will be found in fertilizer and chemical plants.
Common Name
Related Specification
Alloy 2507
SAF 2507 ®
UNS S32750
A479 / SA479 / F53
Grade C Mn Si P S Cr Mo Ni N Fe
Super Duplex S32750 0.030 max 1.20 max 0.80 max 0.035 max 0.020 max 24.00 – 26.00 3.00 – 5.00 6.00 – 8.00 0.24 – 0.32 58.095 min
Super Duplex S32760 0.05 max 1.00 max 1.00 max 0.030 max 0.010 max 24.00 – 26.00 3.00 – 4.00 6.00 – 8.00 0.20 – 0.30 57.61 min
Element Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
S32750/S32760 7.8 0.281 1350 2460
Duplex 2507 Fasteners

Other Products

Super Duplex S32750 T Bolt Super Duplex S32760 T Bolt
Super Duplex S32750 Hex Bolt Super Duplex S32760 Hex Bolt
Super Duplex S32750 Lag Bolt Super Duplex S32760 Lag Bolt
Super Duplex S32750 Counter sunk Bolt Super Duplex S32760 Counter sunk Bolt
Super Duplex S32750 Hex Head Nut Super Duplex S32760 Hex Head Nut
Super Duplex 2507 Hex Bars Super Duplex 2507 Flat Bars

Duplex 2507 Fasteners Price List

  • S32750 / S32760 Super Duplex Bolt/Nut
    US $2500-S32750 / S327600 / Ton (FOB Price)
  • Bolt/Nut astm A479 S32750 / S32760
    US $S32750 / S32760-1200 / Ton (FOB Price)
  • Super Duplex Bolt/Nut S32750 / S32760
    US $500-2000 / Ton (FOB Price)
  • ASTM A479 S32750 / S32760 Super Duplex Bolt/Nut
    US $850-2200 / Metric Ton (FOB Price)
  • sA193 S32750 / S32760 Bolt/Nut
    US $1.5-9 / Kilogram (FOB Price)
  • S32750 / S32760 Bolt/Nut manufacturer
    US $850-2200 / Metric Ton (FOB Price)
  • ASTM A479 Gr. S32750 / S32760 Bolt/Nut
    US $500-1000 / Ton (FOB Price)

Different Types of Duplex 2507 Fasteners

  • Duplex 2507 Coated Hex Bolt
  • UNS S32750 Coated Hex Bolt
  • WNR 1.4410 Coated Hex Bolt
  • ASTM A479 Coated Hex Bolt
  • Grade 2507 Coated Hex Bolt
  • Duplex 2507 Polished Stud Bolt
  • UNS S32760 Polished Stud Bolt
  • WNR 1.4410 Polished Stud Bolt
  • ASTM A479 Polished Stud Bolt
  • Grade 2507 Polished Stud Bolt
  • Duplex 2507 Threaded Bolt
  • UNS S32750 Threaded Bolt
  • WNR 1.4410 Threaded Bolt
  • ASTM A479 Threaded Bolt
  • Grade 2507 Threaded Bolt


We Sumit Impex Metal Ensure the Best Quality of Packing, Because It Plays an Important Role Especially in the Case of International Shipments in Which Consignment Passes Through Various Channels to Reach the Ultimate Destination, So We Put Extraordinary Concern Regarding Packaging.

We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,

  • Boxes and Crates
  • Shrink-wrapped
  • Carton boxes
  • Wooden pallets
  • Wooden boxes
  • Wooden crates

Testings (Destructive, Non Destructive)

  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Positive Material Identification – PMI Testing
  • Chemical Analysis – Spectro Analysis
  • Intergranular Corrosion (IGC) Test
  • Pitting Resistance Test
  • Dye Penetrant Test (DP Test)
  • Micro Test
  • Macro Test
  • Hardness Test
  • Flaring Test
  • Flattening Test
  • Hydrostatic Test
  • Radiography Test
  • Ultra Sonic Test (UT)
  • Eddy Current Testing
  • Impact Test
  • Bend Test

Application Industries

These material are not a single material but the name for a family of corrosion resistant steels. Like many scientific breakthrough the origins of stainless steel lies in a lucky accident. From the smallest part of zipper to the largest building skyscraper, stainless steel is an essential part of modern life.Stainless steel’s strength, resistance to corrosion and low maintenance make it the ideal material for a wide range of applications. It is also has a long life cycle and is 100% recyclable.

  • Construction
  • Bridges
  • Petrochemical Industry
  • Ship Building
  • Engineering
  • General Structural Purposes
  • Offshore and Onshore Services

Duplex 2507 Fastener Manufacturers

Country we serve / City we deliver

Spain, Trinidad & Tobago, South Africa, Costa Rica, Netherlands, Colombia, Tibet, Afghanistan, Greece, Mongolia, Austria, United Arab Emirates, Angola, India, Jordan, Chile, Mexico, Namibia, Japan, Israel, Macau, Argentina, Ghana, Kuwait, Ecuador, Switzerland, Nigeria, Ukraine, Bulgaria, Poland, South Korea, Chile, United States, Hungary, Bhutan, Norway, Kazakhstan, Belarus, Czech Republic, Morocco, Italy, Denmark, Venezuela, Lebanon, Zimbabwe, Belgium, Slovakia, Yemen, Puerto Rico, Algeria,Sri Lanka, New Zealand, Libya, Iraq, Nepal, Romania, Egypt, Ireland, Kenya, Saudi Arabia, Russia, Indonesia, Singapore, Hong Kong, Peru, Qatar, Azerbaijan, Bahrain, Germany, Australia, United Kingdom, Pakistan, Serbia, Gabon, Taiwan, Iran, Thailand, Oman, Vietnam, Lithuania, Portugal, Finland,Tunisia, Gambia, Brazil, Bangladesh, Turkey, Malaysia, Croatia, France, Sweden, Estonia, China, Philippines, Canada, Bolivia, Nigeria

& Boston, Moscow, Toronto, Geoje-si, Karachi, Istanbul, Courbevoie, Milan, Chiyoda, Thane, Aberdeen, Brisbane, Lagos, Lahore, Vung Tau, Faridabad, Ho Chi Minh City, Colombo, Santiago, Jaipur, Jeddah, Ludhiana, Doha, Haryana, Vadodara, Atyrau, Petaling Jaya, Ahvaz, Ernakulam, Gimhae-si, Surat, Sydney, Bengaluru, Mexico City, Ulsan, Madrid, Bangkok, Pimpri-Chinchwad, Thiruvananthapuram, New York, Bhopal, Howrah, Coimbatore, Chennai, Edmonton, Los Angeles, Rajkot, Mumbai, Sharjah, Cairo, Seoul, London, Jakarta, Abu Dhabi, Dammam, Nashik, Dubai, Hyderabad, Houston, Manama, Calgary, Granada, Rio de Janeiro, Navi Mumbai, Al Khobar,Kanpur, Hong Kong, Nagpur, Port-of-Spain, Ankara, Baroda, Algiers, Ahmedabad, Perth, Gurgaon, Singapore, Busan, Montreal, Al Jubail, Secunderabad, Ranchi, Jamshedpur, New Delhi, Tehran, Kolkata, Caracas, Melbourne, Kuwait City, Dallas, Pune, Muscat, Noida, Indore, Hanoi, Chandigarh, La Victoria, Kuala Lumpur, Bogota, Visakhapatnam

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