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Mazin Fasteners is a reputable manufacturer and supplier of Duplex Steel Washers S31803, located in Muscat, Oman. They specialize in providing reliable, high-strength fastening components designed for tough industrial settings. The company creates precision-engineered washers that meet international standards and adhere to strict project specifications. With state-of-the-art manufacturing facilities, advanced machining capabilities, and thorough quality control processes, Mazin Fasteners guarantees exceptional dimensional accuracy, corrosion resistance, and a long service life. Their Duplex Steel S31803 washers are extensively supplied to industries such as oil and gas, petrochemical, marine, construction, and power generation, all backed by prompt delivery, competitive pricing, and dedicated customer-focused technical support.
Duplex Steel Washers S31803 are crafted from a chromium-nickel-molybdenum duplex stainless steel, featuring a balanced microstructure of austenitic and ferritic phases. The typical chemical makeup consists of around 22% chromium, 4.5% to 6.5% nickel, about 3% molybdenum, along with nitrogen additions. This unique composition grants them high tensile and yield strength, along with excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. Mechanically, S31803 outperforms austenitic stainless steels, offering great toughness and dependable performance even under high pressure and temperature conditions.
| Grade | Duplex Steel UNS S31803 / S32205 |
| Specifications | ASTM A 479 ASME SA 479 |
| Dimension | DIN, ASTM, BS and all International Standards |
| Length | 3mm to 200mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Types | Star Washer, Flat Washer, Lock Washer, Slot Washer, Machine Washer, Sealing Washer, Split Washer, Dome Tooth Washer, Countersunk Washer, Tab Washers, Spherical Washer, Square Washer, Spring Washer, Round Washers, Square Washers etc |
| S31803 / S32205 | C | N | P | Si | Mn | Mo | Fe | Cr | S | Ni |
| 1.0 | 0.03 | 0.02 | 2.0 | 3.0 – 3.5 | 22.0 – 23.0 | 0.03 | 4.5 – 6.5 | 0.14 – 0.2 | Bal |
| S31803 / S32205 | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
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.
Duplex Steel Washers S31803 find extensive use in applications that demand high strength and outstanding corrosion resistance. They are frequently utilized in both offshore and onshore oil and gas facilities, petrochemical plants, desalination units, and marine structures that face chloride-rich environments. These washers are ideal for pressure vessels, pipelines, heat exchangers, and structural assemblies where load distribution and joint integrity are crucial.
At Mazin Fasteners, we prioritize the safety and quality of our Duplex Steel S31803 washers during delivery. Each washer is thoroughly inspected and individually wrapped in protective packaging to prevent damage. They are then placed in tightly labeled boxes with product details and detailed quantities. Our packaging is designed to protect the environment and physical impact, ensuring that your high-performance washer arrives in prime condition and ready for immediate use.
Mazin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Muscat, OMAN, with over 8 years of experience serving global industries.
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