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Poang Fasteners is a reliable name in the manufacturing and supply of Duplex Steel Fasteners S31803, offering top-notch fastening solutions that industries can count on for strength and resistance to corrosion. Made from duplex stainless steel grade S31803, these fasteners blend the best features of both austenitic and ferritic stainless steels, ensuring they are tough, durable, and built to last. With precise threading and accurate dimensions, Duplex Steel S31803 fasteners create secure connections in critical applications. Poang Fasteners is committed to providing products that meet international standards, catering to the construction, marine, oil and gas, and chemical sectors both in Vietnam and around the world.
Duplex Steel Fasteners S31803 are crafted from a mix of chromium, nickel, molybdenum, and nitrogen, giving them exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking caused by chlorides. Their unique dual-phase microstructure offers nearly double the strength of regular stainless steels while still being ductile and resistant to fatigue. On a mechanical level, these fasteners boast high tensile and yield strength, stability in extreme temperatures and pressures, and impressive wear resistance. This strong alloy composition guarantees long-lasting performance, making Duplex Steel S31803 fasteners ideal for harsh and corrosive environments where standard stainless steel might fall short.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Duplex Steel S31803 | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Duplex Steel S31803 | 7.9 g/cm3 | 1402 °C (2555 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 % |
Standard : DIN, ASTM, BS and all International Standards
Size : 3 mm to 200 mm
Bolt / Screw Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Nuts Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Washers Size : M1 – M64 | #4 to 3″ | Custom Sizes
Length : M02 to M33
Types : Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw
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 Fasteners S31803 are widely used in various industries due to their excellent strength and corrosion resistance. They are ideal for applications in the chemical and petrochemical industries, oil and gas exploration, marine environments, and power generation. These fasteners are essential in construction projects, particularly in offshore platforms, heat exchangers, and pressure vessels. Their reliability and durability make them a preferred choice for critical applications requiring long-term performance under harsh conditions.
These fasteners are widely utilized in industries where secure fastening and corrosion resistance are crucial. In offshore oil and gas platforms, they are used in pipelines, subsea equipment, and drilling operations that face chloride-rich conditions. In marine settings, they ensure reliable fastening in seawater, while in chemical processing plants, they stand up to aggressive acids and solvents. They also find applications in desalination plants, the pulp and paper industry, structural engineering, and power generation systems. With their ability to withstand challenging environments, Duplex Steel S31803 fasteners are a go-to choice for many demanding applications.
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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