Duplex Steel 2205 Nuts

As a trusted manufacturer and supplier in Mumbai, India, we offer high‑quality Duplex Steel 2205 Nuts designed to meet demanding industrial applications where strength, corrosion resistance, and durability are critical. Our Duplex 2205 Nuts are precision‑engineered under the renowned Sumit Impex brand to ensure superior performance in chloride‑rich and high‑stress environments, making them ideal for use in oil & gas, marine, chemical processing, and infrastructure projects. Available in various sizes and specifications, these nuts deliver consistent reliability and long service life for bolted joint assemblies.

Duplex Steel 2205 Nuts are manufactured from a duplex stainless steel alloy that combines both austenitic and ferritic microstructures, giving the fasteners excellent strength and corrosion resistance. This grade is commonly identified as UNS S31803 and UNS S32205, and is also known as EN 1.4462 / SAF 2205 in international standards. The balanced alloy composition provides high resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking, making these nuts suitable for harsh environments such as marine, offshore, and chemical processing industries. Compared with conventional stainless grades like 304 and 316, the duplex structure offers higher mechanical strength and improved durability under heavy loads.

These fasteners are widely used where both structural strength and corrosion resistance are essential. The alloy’s chromium, molybdenum, and nitrogen content improves resistance to aggressive chemicals, seawater exposure, and acidic conditions while maintaining excellent fatigue strength and weldability. Duplex grade nuts are often supplied in various forms such as Duplex 2205 Hex Nuts, Duplex Steel S32205 Heavy Hex Nuts, UNS S31803 Lock Nuts, and Duplex 2205 Coupling Nuts, making them suitable for different bolting assemblies in demanding industrial systems.