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The Fasteners Mart in Mumbai, India, is a leading distributor of high-quality fasteners and industrial products to many industries such as oil and gas, marine, and construction. The company is dedicated to providing dependable and long-lasting products, such as Super Duplex Steel washers. These washers are manufactured from a mixture of austenitic and ferritic stainless steel, which provides excellent strength, corrosion resistance, and durability. Found in forms such as grade 2507 and grade 2205, Super Duplex Steel washers are available in different shapes that include flat, beveled, and custom design, suitable for high-temperature and high-pressure conditions.
Super Duplex Steel washers are mostly manufactured from a mixture of austenitic and ferritic stainless steel containing high percentages of chromium (approximately 25-30%), molybdenum (3-5%), and nickel (4-7%) for better corrosion resistance. Some of the mechanical properties are tensile strength of 700 MPa to 1000 MPa and yield strength of 500 MPa to 750 MPa. Super Duplex Steel washers possess superior resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. They are also characterized by their superior fatigue resistance, high strength, and excellent resistance to aggressive chemicals and seawater.
| Standard | DIN, ASTM, BS and all International Standards |
| Specifications | ASTM A479 & ASME SA479 |
| UNS S32760 Nut and Bolts Size | M3 To M56 3/6″ to 2″ |
| Length | 3 to 200 MM |
| Super Duplex Steel 2207 Machine Screws Size | M1.6 To M12 |
| Duplex Steel 2205 Washers Size | M3 To M56 3/6″ to 2″ |
| Tensile Strength(MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) | |
| Super Duplex Steel Bolts | 760 | 550 | 15 | 32 Max |
| Phosphorus | Sulphur | Silicon | Carbon | Manganese | Nickel | Molybdenum | Nitrogen | Copper | Chromium |
|---|---|---|---|---|---|---|---|---|---|
| 0.035 % max | 0.02 % max | 0.80 % max | 0.03% Max | 1.20 % max | 6.00 – 8.00 % | 3.00 – 5.00 % | 0.24 – 0.32 % | 0.50 % max | 24.0 – 26.0 % |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Super Duplex Steel washers are commonly applied in applications where strength as well as corrosion resistance is critical. They can be found extensively in the oil and gas, marine, and chemical processing industries. They are best suited to hold flanges, bolts, and fasteners in aggressive environments like offshore platforms, chemical reactors, and desalination plants. Their very high resistance to chloride corrosion makes them especially well suited for application in seawater service, where other materials would be expected to fail. They find application in power plants, pressure vessels, and heat exchangers.
We provide safe and effective delivery services for Super Duplex Steel washers, ensuring timely delivery in pristine condition. Our packaging solutions include HDPE bags, corrugated boxes, and special crates, designed to keep the washers safe during transit. Each package is tightly sealed to avoid damage and contamination, ensuring safe delivery to our customers.
The Fasteners Mart is a leading manufacturer and supplier of high-quality fasteners in Mumbai, India, with over 8 years of experience serving global industries.
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