Our Products Range
ASTM A A479 / ASME SA A479 Duplex Steel Fasteners, Duplex Steel High Tensile Fasteners, Duplex Steel Nuts, Duplex Steel Flat Washer Supplier, Duplex Steel UNS S32205 Threaded Rod, Duplex 2205 Round Head Bolts Manufacturer.
Duplex Steel Fasteners are manufactured using a dual-phase alloy structure that combines austenitic and ferritic stainless steel, providing high tensile strength and excellent resistance to corrosion. These fasteners are specially designed for demanding environments where exposure to moisture, chemicals, and high pressure is common. Grades such as Duplex Steel 2205 Fasteners, Duplex Steel 2507 Fasteners, and Super Duplex Fasteners offer superior protection against pitting, crevice corrosion, and stress corrosion cracking.
Duplex Steel Fasteners are manufactured using a dual-phase alloy structure that combines austenitic and ferritic stainless steel, providing high tensile strength and excellent resistance to corrosion. These fasteners are specially designed for demanding environments where exposure to moisture, chemicals, and high pressure is common. Grades such as Duplex Steel 2205 Fasteners, Duplex Steel 2507 Fasteners, and Super Duplex Fasteners offer superior protection against pitting, crevice corrosion, and stress corrosion cracking.
Duplex Steel 2205 Fasteners Manufacturer, Duplex Stainless Steel Fasteners, Duplex Steel werkstoff nr. 1.4462 Fasteners, Supplier of Dupelx Steel Bolts, UNS S31803 Fasteners.
Our inventory includes grades such as UNS S32205 Fasteners, UNS S31803 Fasteners, UNS S32750 Super Duplex Fasteners, and UNS S32760 Fasteners. The high chromium, molybdenum, and nitrogen content in Duplex Steel Fasteners enhances resistance to seawater corrosion, acidic chemicals, and extreme temperature variations. These fasteners also provide high yield strength, which allows them to withstand heavy loads and mechanical stress without deformation.
Duplex Steel Fasteners are widely used in oil and gas pipelines, offshore platforms, chemical processing plants, marine structures, pressure vessels, and heat exchangers. They are also suitable for construction, power generation, and desalination plants where long service life and low maintenance are required. Their ability to perform reliably in harsh and corrosive environments makes them a preferred fastening solution for critical engineering systems.
We supply Duplex Steel Fasteners in standard and customized sizes with various coatings and finishes such as plain, polished, and passivated surfaces. Each batch is tested for mechanical strength, chemical composition, and dimensional accuracy and is delivered with full Mill Test Certificates (MTC). With competitive pricing, consistent quality, and timely delivery, Eramets Steel Alloys Pvt Ltd is a trusted manufacturer and supplier of Duplex Steel Fasteners in Mumbai and across India.
Specification Of Duplex 2205 Fasteners:
| Standard | ASTM / ASME SA 790 |
|---|---|
| Size | M02 to M30 |
| Length | 3 mm To 200 mm |
| Grade | UNS NO. S 31803, S 32205, S 32550, S 32750 |
| Specification | IS, BS, ASTM |
| Type | Bolts, nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, etc. |
Chemical Properties Of Duplex 2205 (UNS-S32205/UNS-S31803) Duplex Steel
| C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|
| 2205 (S31803) | 0.03 max | 2.0 max | 1.0 max | 0.03 max | 0.02 max | min: 21.0 max: 23.0 | min: 2.5 max: 3.5 | min: 4.5 max: 6.5 | min: 0.08 max: 0.20 |
| 2205 (S32205) | 0.03 max | 2.0 max | 1.0 max | 0.03 max | 0.02 max | min: 22.0 max: 23.0 | min: 3.0 max: 3.5 | min: 4.5 max: 6.5 | min: 0.14 max: 0.20 |
Mechanical Properties Of Duplex Steel 2205 Fasteners:
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) |
|---|---|---|---|---|
| UNS-S 31803 | 650-880 | 448 | 25 | |
| UNS-S 32205 | 621 | 448 | 25 | 21 max |
Physical Properties Duplex Steel UNS-S31803/UNS-S32205 Fasteners:
| Density lbm/in3 | Electrical Resistivity mW•in | Thermal Conductivity (BTU/hr•ft•°F) | Heat Capacity BTU/lbm•°F | Electrical Resistivity (in x 10-6) | |
|---|---|---|---|---|---|
| at 68°F | 0.278 | 27.6 | 8.7 | 0.112 | 33.5 |
| at 212°F | 26.1 | 9.2 | 0.119 | 35.4 | |
| at 392°F | 25.4 | 9.8 | 0.127 | 37.4 | |
| at 572°F | 24.9 | 10.4 | 0.134 | 39.4 |
Other Types of Duplex Steel Fasteners
| Duplex Steel Fasteners | Duplex Steel Fasteners |
|---|---|
| Duplex Steel Bolts | Duplex Steel Nuts |
| Duplex Steel Screws | Duplex Steel Washers |
| Duplex Steel Stud Bolts | Duplex Steel Hex Bolts |
| Duplex Steel Heavy Hex Bolts | Duplex Steel Anchor Bolts |
| Duplex Steel U Bolts | Duplex Steel Eye Bolts |
| Duplex Steel Carriage Bolts | Duplex Steel Allen Bolts |
| Duplex Steel Machine Screws | Duplex Steel Self Tapping Screws |
| Duplex Steel Plain Washers | Duplex Steel Spring Washers |
| Duplex Steel Lock Nuts | Duplex Steel Flange Nuts |
| Duplex Steel Threaded Rods | Duplex Steel Foundation Bolts |
| Duplex Steel Socket Head Cap Screws | Duplex Steel Set Screws |
| Duplex Steel Custom Fasteners | Duplex Steel Precision Fasteners |
