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Santner Nickel Alloys is a trusted manufacturer and supplier of premium Duplex Steel Fasteners in Hamilton, New Zealand, offering high-strength fastening solutions for demanding industrial environments. Our fasteners are engineered with superior precision and crafted from robust duplex stainless steel, ensuring exceptional durability, corrosion resistance, and long-term performance. With a strong commitment to quality and innovation, we provide a wide range of Duplex Steel Fasteners suitable for various mechanical and structural applications. Backed by reliable customer service and timely delivery, Santner Nickel Alloys remains a preferred partner for industries seeking dependable and high-performance fastening products.
Duplex Steel Fasteners typically contain 22–25% chromium, 5–7% nickel, 3–4% molybdenum, and balanced nitrogen content, giving them excellent corrosion and pitting resistance. Their dual-phase austenitic-ferritic microstructure provides superior mechanical strength, with high yield and tensile values that surpass many standard stainless steels. These fasteners maintain outstanding toughness, good weldability, and strong resistance to stress corrosion cracking, making them durable even in chloride-rich or high-pressure environments. Their combination of strength, stability, and corrosion resistance ensures long-lasting, reliable performance across diverse industrial applications.
| Specifications | : | ASTM A182 / ASME SA182 |
| Size | : | 1/8″ NB TO 24″ NB |
| Standards | : | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | : | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | : | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Grades | : | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F6 |
| 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 % |
| Grade | YS (MPa) | UTS (MPa) | % Elongation | Hardness(BHN) |
| UNS S32750 | 550 min. | 795 min. | 15 min. | 310 max. |
| UNS S32760 | 550 min. | 750 min. | 25 min. | 270 max. |
At Santner Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Fasteners in Hamilton, New Zealand, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the New Zealand, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Duplex Steel Fasteners are widely used across industries that require high strength, corrosion resistance, and dependable fastening performance. They are commonly found in offshore platforms, subsea equipment, and marine environments due to their excellent resistance to chlorides and seawater. These fasteners are also utilized in chemical processing plants, oil and gas pipelines, desalination units, and power generation systems. Their durability makes them suitable for pressure vessels, heat exchangers, structural assemblies, and heavy machinery. Additionally, Duplex Steel Fasteners are preferred in pulp and paper mills, wastewater treatment facilities, and other sectors that demand secure, long-lasting fastening solutions.
