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Aria Fasteners stands out as a top-notch manufacturer and supplier located in Hamilton, New Zealand, specializing in high-quality Super Duplex Steel Washers designed for tough industrial, marine, and chemical applications. With a reputation for precision manufacturing, strict adherence to international standards, and rigorous quality control, the company caters to sectors like oil and gas, petrochemical, offshore, and chemical processing. Aria Fasteners provides washers that guarantee exceptional corrosion resistance, mechanical strength, and long-lasting reliability even in the harshest environments. Their commitment to technical expertise, customer satisfaction, and prompt delivery has established them as a trusted source for premium Super Duplex Steel fastening solutions throughout New Zealand and beyond. *(≈100 words)*
Super Duplex Steel Washers are crafted from high-performance duplex stainless steel alloys, typically featuring 24–26% chromium, 6–8% nickel, and 3–5% molybdenum, along with nitrogen and other trace elements. This unique blend offers remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking, particularly in environments rich in chlorides and seawater. On the mechanical side, they boast high tensile strength, hardness, and impressive load-bearing capabilities. The combination of their strength and corrosion resistance makes these washers perfect for high-pressure, high-load applications where both mechanical performance and chemical stability are essential. *(≈90 words)*
| 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 washers are used for many high-performance applications. In chemical processing, they efficiently control the interaction with corrosive chemicals and high pressure. In marine environments, they do not corrode in sea water, hence, they provide long service to the equipment. In the oil and gas industry, they offer safe and effective sealing and spacing where stress is high. In addition, Super Duplex Steel washers are applied in power generation and construction industries due to their high performance in harsh conditions.
Super Duplex Steel Washers find their place in various applications that demand durability, high strength, and corrosion resistance. They’re often used in flanged joints, piping systems, valves, pumps, pressure vessels, and structural assemblies across offshore platforms, petrochemical plants, chemical processing units, and oil and gas facilities. Their ability to resist oxidation, pitting, and stress corrosion cracking makes them particularly well-suited for challenging marine and industrial environments.
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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