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Poang Fasteners is your go-to manufacturer and supplier for Duplex Steel Washers S31803, offering fastening components that blend impressive strength with outstanding corrosion resistance. Crafted from duplex stainless steel grade S31803, these washers boast a well-balanced microstructure of ferrite and austenite, which guarantees toughness, durability, and a long lifespan. With their precise dimensions and excellent load distribution capabilities, they significantly enhance the security and stability of fastening assemblies. Poang Fasteners provides Duplex Steel S31803 washers that comply with international standards, making them a reliable choice for demanding industries in Vietnam and around the world.
These Duplex Steel Washers S31803 are primarily made up of chromium, nickel, molybdenum, and nitrogen, which boost their resistance to pitting, crevice corrosion, and stress corrosion cracking caused by chlorides. Thanks to their dual-phase metallurgical structure, they offer nearly double the strength of standard stainless steels while still maintaining good ductility and fatigue resistance. On the mechanical side, these washers showcase high tensile and yield strength, exceptional toughness, and remarkable stability under varying pressures and temperatures. Their robust composition guarantees long-lasting performance, making Duplex Steel S31803 washers perfect for critical fastening applications in harsh and corrosive environments.
| 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 % |
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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.
You’ll find Duplex Steel Washers S31803 widely used in industries that require dependable and corrosion-resistant fastening solutions. In the oil and gas sector, they’re essential for offshore platforms, subsea equipment, and pipelines that face chloride-rich conditions. They’re also utilized in marine engineering, desalination plants, chemical processing facilities, and the pulp and paper industry. Furthermore, they play a crucial role in power generation and structural engineering projects where high load-bearing capacity and corrosion resistance are vital. With their ability to evenly distribute loads and resist wear, Duplex Steel S31803 washers ensure secure fastening and long-term reliability.
Poang Fasteners is a leading manufacturer and supplier of high-quality fasteners in Da Nang, Vietnam, with over 8 years of experience serving global industries.
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