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Rinku Fasteners, located in Kolkata, India, is a trusted manufacturer and supplier known for high-quality Super Duplex Steel Washers S32750. Rinku Fasteners caters to industries demanding durable and corrosion-resistant fastening solutions. Their Super Duplex S32750 washers are engineered to provide exceptional mechanical strength and outstanding resistance to harsh environments, making them ideal for critical industrial applications requiring long-lasting reliability.
Super Duplex Steel Washers S32750 consist mainly of 24–26% chromium, 6–8% nickel, 3–5% molybdenum, and 0.24–0.32% nitrogen, forming a balanced dual-phase microstructure of ferrite and austenite. This composition imparts high yield strength around 550 MPa, excellent corrosion resistance, superior pitting resistance, and good toughness even at low temperatures. The material is highly resistant to stress corrosion cracking and crevice corrosion with a density of approximately 7.8 g/cm³.
| 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 S32750 are extensively used in aggressive and corrosive environments such as oil and gas, petrochemical, chemical, marine, and power generation industries. They serve vital roles in applications including pumps, valves, pipe flanges, pressure vessels, and subsea equipment. Their superior strength and corrosion resistance ensure safety, durability, and performance in demanding industrial conditions where exposure to chloride and other corrosive agents is common.
At Rinku Fasteners, our Super Duplex Steel S32750 washers are carefully packaged to ensure they reach you in pristine condition. Each washer is inspected for quality and individually wrapped in protective material to guard against damage. They are then packed in robust, clearly labeled boxes that specify product details and quantities. Our packaging is designed to protect against environmental factors and physical impacts, ensuring that your high-performance washers arrive safely and ready for use.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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