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Lina Fasteners stands out as a top manufacturer and supplier of Duplex Steel Washers S31803, proudly based in Tunis, Tunisia. We specialize in providing high-quality fastening components tailored for tough industrial applications. By leveraging cutting-edge manufacturing technology, precision machining, and rigorous quality control, we ensure our washers meet international standards like ASTM and ISO. Our products cater to various sectors, including oil and gas, chemical processing, petrochemical, marine, and power generation. Renowned for their exceptional durability, corrosion resistance, and precise dimensions, our standard and custom Duplex Steel Washers S31803 are designed to enhance joint integrity, evenly distribute loads, and deliver reliable performance in even the harshest, high-pressure, and corrosive environments around the globe.
Duplex Steel Washers S31803 are crafted from a well-balanced duplex stainless steel that boasts high levels of chromium, molybdenum, and nitrogen. This unique composition provides outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. On the mechanical side, these washers exhibit impressive tensile and yield strength, along with superior toughness and stability under heavy loads. They maintain their shape even when faced with thermal cycling and harsh chemical exposure, ensuring consistent performance. S31803 washers blend the corrosion resistance of austenitic stainless steel with the strength of ferritic steel, making them perfect for demanding applications that require long-lasting durability and reliability.
| 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 S31803 washers are used in applications where high strength and excellent corrosion resistance are required. They are ideal for marine environments, chemical processing, and oil and gas industries. These washers perform well in high-pressure and high-temperature settings, such as in heat exchangers, reactors, and pipelines. Their resistance to stress-corrosion cracking and pitting ensures durability and reliability, making them suitable for demanding industrial conditions where both mechanical performance and resistance to harsh environments are crucial.
At Lina 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.
Lina Fasteners is a leading manufacturer and supplier of high-quality fasteners in Tunis, Tunisia, with over 8 years of experience serving global industries.
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