Request For Our Latest Prices On Duplex Steel Nuts S31803 in Tunis, Tunisia!
Lina Fasteners is a well-respected manufacturer and supplier based in Tunis, Tunisia, specializing in high-quality Duplex Steel Nuts S31803 designed for demanding industrial applications. The company employs cutting-edge manufacturing techniques and rigorous quality control measures to guarantee precise dimensions, consistent performance, and adherence to international standards. The Duplex Steel S31803 nuts from Lina Fasteners offer an impressive blend of strength and corrosion resistance, making them ideal for tough operating conditions. With a commitment to reliability, durability, and prompt delivery, Lina Fasteners plays a vital role in supporting critical projects across various industries.
Duplex Steel S31803 is a type of duplex stainless steel that features a balanced austenitic-ferritic structure. Its typical composition includes 21–23% chromium, 4.5–6.5% nickel, 2.5–3.5% molybdenum, and controlled nitrogen levels. This alloy is known for its high tensile and yield strength, good ductility, and outstanding fatigue resistance. Mechanically, S31803 nuts deliver nearly double the strength of standard austenitic stainless steels, along with exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking.
| S31803 | 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 % |
| S31803 | 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 |
| Specifications | ASTM A479 / ASME SA479 |
| Standards | DIN, ASTM, BS and all International Standards |
| Length | 3 mm to 200 mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | Hex Head Bolts, Square Bolts, U bolts, Eyebolts, T bolt, Hex Bolt, Lag Bolts, Countersunk Bolts, Hex Head nuts, Square nuts, Locknuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts |
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 Nuts S31803 are commonly utilized in applications that demand high strength and corrosion resistance. You’ll find them in sectors like oil and gas, petrochemical plants, chemical processing units, offshore platforms, and marine installations. They’re also used in pressure vessels, heat exchangers, piping systems, and flanged connections that are exposed to chloride-rich or aggressive environments. These nuts ensure secure fastening, a long service life, and dependable performance in critical industrial operations.
At Lina Fasteners, Duplex Steel Nuts S31803 are meticulously packaged to ensure their integrity and quality during transit. Each nut is individually inspected and wrapped in protective materials to prevent damage. For bulk orders, nuts are securely packed in durable, corrosion-resistant containers. Our packaging solutions are designed to maintain product excellence, safeguarding against environmental factors and ensuring that the nuts arrive in optimal condition. Trust Lina Fasteners for secure and reliable packaging of your high-quality components.
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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