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Duplex steel fasteners are hardware components such as bolts, screws, nuts, washers, and studs made from duplex stainless steel, a type of stainless steel alloy characterized by a two-phase microstructure consisting of both austenitic and ferritic phases. This dual-phase structure provides duplex steel fasteners with unique properties, including high strength, excellent corrosion resistance, and good weldability.
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. |
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We offer These Duplex Steel Fasteners as per DIN, ISO, JIS or ANSI Standard.
Duplex steel fasteners play a vital role across diverse industrial sectors, thanks to their exceptional properties. Widely utilized in industries such as chemical processing, oil and gas, marine, and offshore, these fasteners offer superior corrosion resistance and mechanical strength.
Duplex steel fasteners are available in various grades, including Duplex 2205, Duplex 2304, Duplex 2507, and others, each offering different levels of corrosion resistance, strength, and temperature stability.
Yes, Duplex steel fasteners exhibit excellent corrosion resistance, particularly in chloride-rich environments, making them suitable for applications in marine, offshore, and chemical processing industries.
Yes, Duplex steel fasteners can be welded using appropriate welding techniques and compatible filler materials, ensuring proper joint integrity and maintaining corrosion resistance.
Yes, certain grades of Duplex steel fasteners offer good temperature resistance and can be used in high-temperature applications such as petrochemical processing and power generation.
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