Super Duplex Fasteners Manufacturer
Unifit Fastener is a trusted manufacturer and supplier of Super Duplex Fasteners, which is a provider of high-quality solutions for demanding industrial applications. Our fasteners come in a broad variety of sizes, grades, and configurations with high levels of consistency in terms of reliability and usage in high pressure and highly corrosive settings. The material used to make our Super Duplex fasteners includes some of the finest materials on the market, like UNS S32760/UNS S32205, which are of excellent strength, resistant to chloride, and durable.
We produce all our products according to the national and international standards so as to provide uniform quality and accuracy. We have super duplex nuts,bolts, screws, washers, stud bolts, threaded rods, anchor fasteners, and much more to fulfill the various needs of the projects. We dedicate our attention to the correct size, high-quality finish, and high standards of control to make sure that all fasteners work very well even under the most severe conditions.
Our Super Duplex Steel Fasteners are applied in chemical processing, in the desalination plants, in marine engineering, in offshore structures, in flue gas treatment units, and in the oil and gas industries. Their high thermal conductivity, pitting and crevice resistance, and high mechanical strength make them a reliable choice when dealing with critical operations.
Unifit Fastener is a company with a firm dedication to customer satisfaction and thus aims at providing fast, reliable, and affordable fastening decisions to the global industries.
ASTM A182 Super Duplex Steel S32760 Fasteners Supplier, Super Duplex Steel Bolts, ASME SA 182 Super Duplex Steel Washers, Super Duplex Steel 2207 Fasteners, Super Duplex Steel Nuts, Super Duplex Steel Screws Exporter in India.
Request QuoteTable of Contents
- What are Super Duplex Fasteners?
- Specification of Super Duplex Fasteners
- Send Your Enquiry
- Most Frequently Used Type of Super Duplex Bolts
- Equivalents of Super Duplex Fasteners
- Chemical Composition of Super Duplex Fasteners
- Mechanical Properties 2507 Super Hex Bolts
- Super Duplex S32760 Fasteners Price List
- Standards of Super Duplex Fasteners
- Applications of Super Duplex Fasteners
- FAQs about Super Duplex Fasteners
What are Super Duplex Fasteners?
Super Duplex Fasteners are manufactured out of a dual-phase stainless steel that integrates both austenitic and ferritic structures, which provides it with a superior strength that can be compared to nearly twice that of normal stainless steel. Their pitting, crevice, and stress corrosion cracking resistance are also excellent, and hence they are suited to the severe conditions found in the sea, offshore and chemical processing. These fasteners contain a high content of chromium, nickel, and molybdenum, as well as added nitrogen, which means they can be effectively used in saltwater, acidic environments and under high pressure conditions where other stainless steels may not be able to sustain long term corrosion.
Super Duplex Steel T Bolt, Super Duplex Steel Disc Washers, Super Duplex Steel Hex Head Bolts, Super Duplex Self Clinching Fasteners, Super Duplex Steel Lock Nut, Super Duplex Plain Washers Trader, Super Duplex Steel Threaded Studs, Super Duplex Steel Fasteners Suppliers
Grades of Super Duplex Fasteners
Specification of Super Duplex Fasteners
| Parameter | Details |
|---|---|
| Specifications | Compliant with ASTM / ASME F53, A479 / SA479 |
| Standards | Conforms to DIN, ASTM, BS, and other major international standards |
| Length Range | 3 mm up to 200 mm |
| Nut Sizes | M3 to M56 |
| Bolt / Screw Sizes | M3 to M56 |
| Machine Screw Sizes | M1.6 to M12 |
| Washer Sizes | M3 to M56 |
| Super Duplex Material Grades | UNS S32750, UNS S32760, UNS S32550, UNS S32707, UNS S32950, Zeron 100, Ferralium 255 |
| Fastener Types | Socket Head Cap Screws, Wing Screws, T-Head Bolts, Foundation Bolts, Screws, Studs, Socket Screws, Hex Set Screws, Cap Screws, Machine Screws, Spring Washers, Eye Bolts, Structural Bolts, Hexagon Nuts, U-Bolts, Anchor Bolts, Hex Coupling Nuts, Square Nuts, Hex Domed Cap Nuts, Pan Head Screws, Mushroom Head Square Neck Bolts, J Bolts, Marine Anchors |
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Most Frequently Used Type of Super Duplex Bolts
Super Duplex 2507 Cap Nuts
Alloy 2507 Castle Nuts
UNS S32750 Coupling Nuts
UNS S32760 Heavy Hex Nuts
WNR 1.4410 Hex Jam Nuts
SAF 2507 Keps-K Lock Nuts
Duplex 2507 Stove Nuts
ASTM A1049 Wing Nuts
Super Duplex 2507 Eye Bolts
Alloy 2507 Flange Bolts
UNS S32750 Hanger Bolts
WNR 1.4410 Hex Head Bolts
UNS S32760 J-Bolts
SAF 2507 Shoulder Bolts
DIN 1.4410 Square Head Bolts
SDSS 2507 U-Bolts
Alloy 2507 Fender Washers
UNS S32750 Flat Wahers
WNR 1.4410 Square Washers
UNS S32760 Structural Washers
Alloy 2507 Eye Screws
UNS S32750 Hex Lag Screws
WNR 1.4410 Machine Screws
UNS S32760 Drywall Screws
SAF 2507 Self Drilling Screws
25 Chrome Socket Set Screws
Zeron® 100 Wood Screws
DIN 1.4410 Threaded Cutting Screws
Equivalents of Super Duplex Fasteners
| Common Name | Alloy Name | UNS Designation | European Standard | ASTM / ASME Specification |
|---|---|---|---|---|
| SAF 2507® | Alloy 2507 | UNS S32750 | 1.4410 | A479 / SA479 / F53 |
Chemical Composition of Super Duplex Fasteners
| Element | Percentage (%) |
|---|---|
| Chromium (Cr) | 24 – 26 |
| Nickel (Ni) | 6 – 8 |
| Molybdenum (Mo) | 3 – 5 |
| Manganese (Mn) | ≤ 1.20 |
| Silicon (Si) | ≤ 0.80 |
| Copper (Cu) | ≤ 0.50 |
| Nitrogen (N) | 0.24 – 0.32 |
| Phosphorus (P) | ≤ 0.035 |
| Carbon (C) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.020 |
| Iron (Fe) | Balance |
Mechanical Properties 2507 Super Hex Bolts
| Grade | Tensile Strength (MPa) Min | Yield Strength 0.2% Proof (MPa) Min | Elongation (% in 50mm) | Hardness (HR C) |
|---|---|---|---|---|
| UNS S32750 | 795 | 550 | 15 | 32 max |
Super Duplex S32760 Fasteners Price List
| Product | Price in India (INR) | Price in USD | Price in UAE (AED) |
|---|---|---|---|
| Super Duplex Steel S32760 Screws | ₹ 3,647 | $24.74 | 98.85 |
| Super Duplex Stainless Steel S32760 Fasteners | ₹ 3,845 | $47.43 | 276.17 |
| Super Duplex Steel S32760 Bolts | ₹ 1,799 | $28.75 | 74.87 |
| Super Duplex Steel S32760 Stud Bolts | ₹ 3,157 | $38.50 | 139.71 |
| M8 Super Duplex Steel S32760 Hex Flange Nuts | ₹ 1,309 | $19.19 | 48.76 |
| SDSS S32760 Hex Bolts | ₹ 5,770 | $164.32 | 475.50 |
| Super Duplex Steel S32760 Nut & Bolt Sets | ₹ 2,675 | $25.35 | 56.73 |
| SDSS S32760 Nut & Bolt (per kg) | ₹ 6,498 | $35.00 | 68.10 |
| M16 (5/8") Super Duplex Steel S32760 Hex Head Bolts | ₹ 2,425 | $26.21 | 158.27 |
Standards of Super Duplex Fasteners
| Fastener Type | Applicable Standards |
|---|---|
| Hexagon Bolts / Set Screws | DIN 931, DIN 933, BS 1768, UNI 5731, UNI 5739, ISO 4014, ISO 4017, BS 1769, BS 3692, ANSI B18.2.1 |
| Hexagon Nuts | DIN 934, BS 1768, BS 1769, BS 1083, BS 3692, ISO 4032, ISO 4033, ANSI B18.2.2 |
| Socket Cap Screws | DIN 912, DIN 6912, DIN 7984, UNI 5931, ANSI B18.3, ISO 4762, BS 2470, BS 4168 |
| Stud Bolts | BS 4882, DIN 976 |
Applications of Super Duplex Fasteners
- Chemical Industries
- Defense & Aerospace
- Petrochemical industries
- Building & Construction
- Automobile Industry
- Oil and Gas Industry
- Marine industry
FAQs about Super Duplex Fasteners
What is Super Duplex used for?
Super Duplex stainless steel is widely used in industries where high strength and excellent corrosion resistance are required. It is commonly applied in oil & gas, chemical processing, seawater equipment, desalination plants, and marine engineering. Super Duplex fasteners are ideal for high-pressure, high-temperature, and highly corrosive environments.
Is Super Duplex better than 316?
Yes, in certain applications. Super Duplex stainless steel offers higher strength, better resistance to stress corrosion cracking, and superior resistance to pitting and crevice corrosion compared to 316 stainless steel. While 316 is suitable for general corrosion resistance, Super Duplex is preferred for demanding industrial environments.
What grade are Super Duplex fasteners?
Super Duplex fasteners are typically available in grades such as UNS S31803, UNS S32205, UNS S32750, and UNS S32760. These grades provide excellent mechanical strength and corrosion resistance, making them suitable for critical applications in chemical, marine, and industrial sectors.