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Super Duplex Steel Fasteners

Super Duplex Steel Fasteners

Super Duplex Steel Fasteners are in high demand in businesses with significant corrosion resistance and mechanical strength. These screws are made of a duplex stainless steel alloy, like UNS S32750 (SAF 2507) or UNS S32760, which has both austenite and ferrite phases. Because they have a lot of chromium and molybdenum, Super Duplex Steel Fasteners are very resistant to corrosive conditions like seawater, acids, and solutions that contain chlorides. Their high tensile strength, resistance to impact, and other excellent mechanical properties make them perfect for critical uses in offshore oil and gas, chemical processing, and marine environments. Super Duplex Steel fasteners are made to work in harsh conditions where regular stainless steel rivets might fail. The best thing about Super Duplex Steel is its unique microstructure that balances the austenite and ferrite stages. This two-phase structure makes the alloy’s mechanical qualities and resistance to corrosion better. Super Duplex Steel usually has between 24 and 26% chromium, 4 to 7% nickel, 3 to 5% molybdenum, and small amounts of nitrogen, copper, and other elements. The outstanding performance of Super Duplex Steel Fasteners is partly due to these alloying elements.
One of the best things about Super Duplex Steel Fasteners is how well they prevent corrosion. They work exceptionally well in harsh settings, like offshore oil and gas platforms, desalination plants, and facilities that make chemicals. Even when chlorides and other acidic substances are present, Super Duplex Steel Fasteners are very resistant to pitting corrosion, crevice corrosion, and stress corrosion cracking. This resistance is essential for ensuring that necessary tools and structures will last and work well for a long time. In addition to being resistant to corrosion, the mechanical qualities of Super Duplex Steel Fasteners are excellent. They have a high tensile strength, which means they can take being pulled on without breaking or changing shape. The fact that Super Duplex Steel has both austenite and ferrite phases gives it a unique structure that makes it stronger. Also, these fasteners have excellent yield strength, the most stress a material can take without forever changing shape. Super Duplex Steel Fasteners can handle quick loads or shocks without breaking because they are strong against impact.
Super Duplex Steel Fasteners hold valves, flanges, and underwater equipment together in offshore oil and gas production, where equipment is exposed to harsh conditions like high pressure and temperatures. They are also used where corrosive chemicals and violent media are handled, such as in chemical processing plants.
Super Duplex Steel Fasteners are suitable for desalination plants, which work in very salty settings because they don’t rust easily. Also, Super Duplex Steel Fasteners are used for shipbuilding, offshore platforms, and coastal infrastructure in marine settings where structures are exposed to seawater and other agents that cause corrosion. For Super Duplex Steel Fasteners to work as well as possible, they must be installed and maintained correctly. During fitting, it’s essential to follow the manufacturer’s instructions about how much torque to use, how to assemble the parts, and whether or not to use lubricants or anti-seizing compounds. Overtightening should be avoided because it can cause build-up stress and cause the screws to break. Also, care must be taken to prevent galling, a type of surface damage that can happen when Super Duplex Steel Fasteners are put together. Checking for signs of corrosion, such as discoloration or pitting, should be done regularly. Any corroded fasteners should be replaced quickly to keep the building or equipment in good shape. These sellers can offer different sizes, grades, and Super Duplex Steel Fasteners specifications, such as bolts, nuts, screws, and washers. In conclusion, Super Duplex Steel Fasteners are essential parts known for their high resistance to rust and high mechanical strength. They are used a lot in demanding industries like oil and gas offshore, chemical processing, and marine uses. These fasteners are excellent for essential tools and structures because they are very corrosion-resistant, have high tensile strength, and can take a lot of force without breaking. To ensure they work at their best, they must be installed, maintained, and inspected correctly.

Super Duplex Steel Fasteners Specifications

Specifications : ASTM A479 / ASME SA 479
Standard : DIN, ASTM, BS and all International Standards
Length : 3 mm to 200 mm
Nuts Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Bolt / Screw Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Machine Screws Size : M1.6 – M12
Washers Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Type : Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw, Washers, Spring Washers, Studs, Anchors, Marine Anchors, Nut, Hexagon Nut, Hex Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolt, U- Bolts, J Bolts, Mushroom Head Square Neck Bolts, T-Head Bolts, Wing Screw, Eye Bolt, Foundation Bolts, Structural Bolts.

Super Duplex Steel Fasteners Equivalent Grades

Super Duplex 2507
S32750 / S32760

Super Duplex Steel Fasteners Chemical Composition

Grade Ni Cr N C Mn P S Si Mo Cu Fe
6 – 8
24 – 26
0.24 – 0.32
0.030 max
1.20 max
0.035 max
0.020 max
0.80 max
3 – 5
0.50 max
58.095 min
6.00 – 8.00
24.00 – 26.00
0.20 – 0.30
0.05 max
1.00 max
0.030 max
0.010 max
1.00 max
3.00 – 4.00
0.50 max
57.61 min

Mechanical Properties of Super Duplex Steel Fasteners

Grade Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
S32750 / S32760

Other Products & Grade

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