All About Duplex Steel 329 Fasteners & Applications
The Duplex 329 fasteners are constructed of a mix of Chromium and Nickel. The Duplex Steel 329 Fasteners are non-magnetic and can tolerate oxidation temperatures of up to 1800 ° F. The Duplex 329 Fasteners are extremely resistant to oxidation and corrosion in a wide range of conditions. The Duplex 329 fasteners have a high degree of formability. They are also quite machinable. They can work well at temperatures ranging from cryogenic to 2000 ° F. Duplex 329 fasteners also contain trace amounts of niobium and molybdenum, which increase their strength and toughness. The Duplex 329 fasteners also provide excellent resistance to creep ruptures. Duplex 329 Fasteners have excellent welding qualities and may be welded using traditional methods, both automatic and manual. They are corrosion-resistant to contaminated chloride conditions due to their high chromium and molybdenum content.
Implementations of Duplex 329 Fasteners can be found in a variety of industrial industries. They are extensively utilized in the manufacture of aircraft ducting systems and exhaust systems. They are also utilized to make chemical processing equipment and specialized marine equipment.
Application Of Duplex Steel 329 Fasteners.
• Chemical storage tanks
• Refining
• Pressure vessel shafts (Marine)
• Oil and gas industry flanges, fittings, and pipes
• Technology Offshore
• Paper Manufacturing
• Compressor components
• Desalination plants for seawater
Features
• One of the most widely used precipitation hardening grades in the industry.
• While the solution is soft and ductile when annealed, it can reach high properties with a single precipitation or aging treatment.
• Outstanding corrosion resistance, hardness, toughness, and strength.
Resistance to corrosion
In chloride conditions, 329 exhibits excellent resistance to stress corrosion cracking. Because of the high chromium concentration and molybdenum alloying, the grade is also resistant to general corrosion in acidic conditions.
Microstructure
Sanmac 329 exhibits an austenitic-ferritic microstructure that is free of grain-boundary carbides and intermetallic phases after being solution annealed and quenched. The ferrite content ranges between 55 and 75%.
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