Duplex Steel Fasteners Manufacturers in India
Unifit Fastener manufactures and supplies a premium range of Duplex Steel Fasteners made from high-grade raw materials. We have a full variety of Duplex Steel 2205 Fasteners in our product line, including bolts, nuts, washers, screws, threaded rods, and custom duplex steel. These fasteners are also available in different sizes, shapes, specifications, and thicknesses to suit the needs of different clients. They are highly dependent upon and used in the environment of large industries such as oil and gas, building, offshore structures, and onshore engineering projects due to their reliability and strength.
Duplex 2205 fasteners are known by their great set of features, such as the precise construction, durability of work, easy installation, dimensional accuracy, high mechanical strength, lightweight design, and high level of corrosion resistance. They offer stable geometry, high-quality finish, and no-rust offerings as well as uniform durability. Such kinds of fasteners also assist in providing greater capacity of torque and sustenance of rigidity in extreme conditions. Duplex Steel 2205 is a high-strength, non-corrosive alloy that can be used at any temperature between cryogenic and approximately 1300°F. The Duplex UNS S31803 / S32205 Fasteners are made tough and stable by the austenitic-ferritic microstructure even when they are used at very low temperatures.
Duplex Fasteners Manufacturer, Duplex Steel 2205 Fasteners, Duplex 2205 Hex Bolts, Duplex Steel werkstoff nr. 1.4462 Fasteners, Duplex 2205 Studs, Duplex Stainless Steel Fasteners, UNS S31803 Bolt, Supplier of Duplex Steel Bolts, Duplex 2205 Nuts, UNS S31803 Fasteners, 2205 Duplex Stainless Fasteners Price in India.
Request QuoteTable of Contents
- What is Duplex Steel Fasteners?
- Specification of Duplex Steel Fasteners
- Send Your Enquiry
- Most Frequently Used Type of Duplex Steel Fasteners
- Equivalents of Duplex Steel Fasteners
- Chemical Properties Of Duplex Steel 2205 (UNS-S32205/UNS-S31803)
- Mechanical Properties of Duplex 2205 Fasteners
- Physical Properties of Duplex 2205 (UNS S31803 / S32205) Fasteners
- Estimated Duplex Fasteners Price List
- Other grades of Duplex Steel UNS S31803 Fasteners
- Applications of Duplex Steel Fasteners
- FAQs about Duplex Steel Fasteners
What is Duplex Steel Fasteners?
Duplex steel fasteners are durable bolts, nuts, screws, and other such components that are fabricated using duplex stainless steel, which is an alloy of ferritic and austenitic structures. The resulting combination of this makes them extremely strong, approximately twice as strong as standard stainless steel, as well as very resistant to rust and chemicals. Due to these characteristics, they find extensive application in harsh conditions such as marine applications, chemical processing, and the oil and gas industry, where simple fasteners fail to operate effectively.
ASTM A A479 / ASME SA A479 Duplex Steel Fasteners, Duplex Steel Nuts, Duplex Steel High Tensile Fasteners, Duplex Steel UNS S32205 Threaded Rod, Duplex 2205 Round Head Bolts Manufacturer, Duplex Steel Flat Washer Supplier.
Grades of Duplex Steel Fasteners
Specification of Duplex Steel Fasteners
| Category | Details |
|---|---|
| Standard | ASTM / ASME SA 790 |
| Available Size | M02 to M30 |
| Length Range | 3 mm to 200 mm |
| Grades Offered | UNS S31803, S32205, S32550, S32750 |
| Specifications | IS, BS, ASTM |
| Types | Bolts, Nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolts, Studs, Threaded Rods, Cotter Pins, Socket Screws, Fine Fasteners & Spares, Foundation Fasteners, and more |
Send Your Enquiry
Most Frequently Used Type of Duplex Steel Fasteners
Duplex Steel Bolts
Duplex Nuts
Duplex Steel Screw
DSS Washer
Duplex Stainless Steel Stud Bolts
Duplex Anchor Bolts
Equivalents of Duplex Steel Fasteners
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| Duplex 2205 | 1.4462 | S31803 / S32205 |
Chemical Properties Of Duplex Steel 2205 (UNS-S32205/UNS-S31803)
| Grade | C (max) | Mn (max) | Si (max) | P (max) | S (max) | Cr (%) | Mo (%) | Ni (%) | N (%) |
|---|---|---|---|---|---|---|---|---|---|
| 2205 (S31803) | 0.03 | 2.0 | 1.0 | 0.03 | 0.02 | 21.0 – 23.0 | 2.5 – 3.5 | 4.5 – 6.5 | 0.08 – 0.20 |
| 2205 (S32205) | 0.03 | 2.0 | 1.0 | 0.03 | 0.02 | 22.0 – 23.0 | 3.0 – 3.5 | 4.5 – 6.5 | 0.14 – 0.20 |
Mechanical Properties of Duplex 2205 Fasteners
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50 mm) | Hardness (Rockwell C) |
|---|---|---|---|---|
| UNS S31803 | 650 – 880 | 448 | 25 | — |
| UNS S32205 | 621 | 448 | 25 | 21 (max) |
Physical Properties of Duplex 2205 (UNS S31803 / S32205) Fasteners
| Property | Unit | At 68°F | At 212°F | At 392°F | At 572°F |
|---|---|---|---|---|---|
| Density | lbm/in³ | 0.278 | — | — | — |
| Electrical Resistivity | mW in | 27.6 | 26.1 | 25.4 | 24.9 |
| Thermal Conductivity | BTU/hr ft °F | 8.7 | 9.2 | 9.8 | 10.4 |
| Heat Capacity | BTU/lbm °F | 0.112 | 0.119 | 0.127 | 0.134 |
| Electrical Resistivity | in × 10⁻⁶ | 33.5 | 35.4 | 37.4 | 39.4 |
Estimated Duplex Fasteners Price List
| Product / Description | Price in India (INR) | Price in USD | Price in UAE (AED) |
|---|---|---|---|
| M8 Duplex Steel Hex Flange Nut | ₹ 1,307 | $19.19 | 42.76 AED |
| Duplex Stainless Steel Fasteners (General Price List) | ₹ 3,225 | $46.43 | 156.17 AED |
| Duplex Steel Nut Bolt (Price List) | ₹ 1,637 | $26.35 | 76.73 AED |
| Duplex Steel Bolts (Price List) | ₹ 1,299 | $26.75 | 75.87 AED |
| DSS Hex Bolt (Price List) | ₹ 9,731 | $166.32 | 455.50 AED |
| Duplex Steel Screws | ₹ 2,244 | $25.74 | 96.85 AED |
| M16 (5/8 inch) Duplex Steel Hex Head Bolt | ₹ 2,227 | $26.21 | 134.27 AED |
| Duplex Steel Stud Bolt | ₹ 4,107 | $47.50 | 128.71 AED |
| DSS Nut Bolt (Per Kg Price) | ₹ 1,287 | $13.00 | 89.10 AED |
Other grades of Duplex Steel UNS S31803 Fasteners
| Duplex Steel S31803 Fasteners | |
|---|---|
| Duplex Steel S31803 Nuts | Duplex Steel S31803 Bolts |
| Duplex Steel S31803 Screw | Duplex Steel S31803 Washer |
| Duplex Steel S31803 Studs | S31803 Duplex Steel Square Nut |
| Duplex Steel S31803 Fastener | Duplex 1.4462 Fasteners Stockist |
| S31803 Duplex Steel Machine Screw | Duplex S31803 Socket Head Cap Screw |
| Duplex Steel S31803 Wing Screw Supplier | Duplex Stainless Steel S31803 Coupling Nuts |
| SAF 2205 Duplex Allen Cap Screw Wholesaler | Duplex S31803 Split Lock Washers |
| S31803 Duplex Industrial Fasteners | Duplex 2205 T-Head Bolts Manufacturer |
| Duplex S31803 Eye Bolt Exporter | Duplex Steel S31803 Hex Nuts |
| S31803 Duplex Steel Cap Nuts | S31803 Duplex Ogee Washers |
| Duplex S31803 Slotted Nuts | Ferritic Stainless Steel S31803 U Bolts |
| S31803 Duplex Cap Screw Suppliers | Duplex 2205 Socket Hexagon Head Screw |
| Duplex Steel S31803 Pan Head Screw | S31803 Duplex Steel T-Head Bolts |
| Duplex S31803 Stud Bolts | Duplex Steel 2205 Machine Screws |
Applications of Duplex Steel Fasteners
Duplex Steel Fasteners are widely used in industries that demand high strength and excellent corrosion resistance. Their ability to withstand chloride-rich, acidic, and high-pressure conditions makes them suitable for:
- Marine and Offshore Industry: Used in boat structures, seawater systems, offshore platforms, and subsea equipment due to strong resistance to saltwater corrosion.
- Oil & Gas Industry: Ideal for pipelines, heat exchangers, valves, and pressure vessels exposed to sour gas, high temperatures, and harsh chemicals.
- Chemical and Petrochemical Plants: Preferred in reactors, storage tanks, and chemical processing units because they resist pitting and stress corrosion cracking.
- Desalination Plants: Used in evaporation units, pumps, and brine circulation systems where chloride resistance is essential.
- Pulp and Paper Industry: Suitable for bleaching equipment, digesters, and washers that operate in acidic solutions.
- Power Generation: Applied in turbine components, boilers, and flue gas cleaning systems requiring durable and high-strength fasteners.
- Construction and Structural Engineering: Used in bridges, high-rise structures, and support frames where high load-bearing capacity is required.
- Food and Pharmaceutical Processing: Ideal for hygienic and corrosion-resistant fastening solutions in clean-room and processing environments.
FAQs about Duplex Steel Fasteners
What are Duplex Steel Fasteners?
Duplex Steel Fasteners are bolts, nuts, screws, washers, studs, and other fastening components made from duplex stainless steel, known for its high strength and excellent corrosion resistance.
Are Duplex Steel Fasteners corrosion-resistant?
Yes, duplex steel offers excellent resistance to pitting, crevice corrosion, and chemical attack, especially in chloride-rich and acidic environments.
Do Duplex Steel Fasteners perform well in seawater?
Absolutely. Duplex steel is highly resistant to seawater corrosion, making it a preferred choice for marine and offshore applications.
Are Duplex Steel Fasteners stronger than stainless steel fasteners?
Yes, duplex steel has nearly twice the strength of standard stainless steel grades like 304 and 316, offering superior load-bearing capability.