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Aria Fasteners, located in Hamilton, New Zealand, is a trusted manufacturer and supplier of high-quality Super Duplex Steel Nuts S32750. The company specializes in producing precision-engineered fastening components that offer exceptional strength, corrosion resistance, and long-term performance. With a focus on meeting international standards and customer-specific requirements, Aria Fasteners delivers S32750 nuts ideally suited for demanding marine, offshore, petrochemical, and industrial environments. Their commitment to quality assurance, timely delivery, and competitive pricing has established them as a reliable partner for clients seeking superior fastening solutions for challenging operating conditions.
Super Duplex Steel Nuts S32750 are composed of a high-alloy mixture of chromium, molybdenum, and nitrogen, offering outstanding resistance to pitting, crevice corrosion, and chloride-induced stress cracking. This grade features a duplex austenitic-ferritic microstructure that provides remarkable mechanical strength and toughness. The nuts exhibit high yield and tensile strength, excellent fatigue resistance, and stable performance across a wide temperature range. These mechanical and chemical characteristics make S32750 nuts suitable for applications where both structural resilience and corrosion protection are essential.
| Standard | DIN, ASTM, BS and all International Standards |
| Specifications | ASTM A479 & ASME SA479 |
| UNS S32760 Nut and Bolts Size | M3 To M56 3/6″ to 2″ |
| Length | 3 to 200 MM |
| Super Duplex Steel 2207 Machine Screws Size | M1.6 To M12 |
| Duplex Steel 2205 Washers Size | M3 To M56 3/6″ to 2″ |
| Tensile Strength(MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) | |
| Super Duplex Steel Bolts | 760 | 550 | 15 | 32 Max |
| Phosphorus | Sulphur | Silicon | Carbon | Manganese | Nickel | Molybdenum | Nitrogen | Copper | Chromium |
|---|---|---|---|---|---|---|---|---|---|
| 0.035 % max | 0.02 % max | 0.80 % max | 0.03% Max | 1.20 % max | 6.00 – 8.00 % | 3.00 – 5.00 % | 0.24 – 0.32 % | 0.50 % max | 24.0 – 26.0 % |
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.
Super Duplex Steel Nuts S32750 are used in a variety of complex applications where high strength and corrosion resistance are required. They are ideal for the oil and gas industry, marine environment, chemical processing and power generation. These nuts excel at high pressures and high temperatures, providing reliable performance in extreme conditions. It is commonly used in piping systems, building assemblies, and equipment that require strong resistance to chloride pressure, ensuring safe and durable life
Super Duplex Steel Nuts S32750 are extensively used in industries operating under highly corrosive and high-pressure environments. They are widely applied in offshore drilling rigs, subsea equipment, desalination plants, chemical processing systems, and heat exchangers, where consistent performance is crucial. These nuts provide secure fastening in pump assemblies, valve systems, pressure vessels, and heavy-duty structural joints exposed to seawater, acidic compounds, and aggressive chemicals. Their superior durability, resistance to extreme conditions, and ability to maintain joint integrity make S32750 nuts a preferred choice across marine engineering, petrochemical sectors, and industrial manufacturing processes.
Aria Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hamilton, New Zealand, with over 8 years of experience serving global industries.
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