Duplex Stainless Steel Flanges
Duplex Stainless Steel Flanges are high-performance flanges made from duplex stainless steels, which combine the benefits of austenitic and ferritic microstructures. These flanges offer excellent strength, corrosion resistance, and stress resistance, making them ideal for harsh environments.
🔧 Key Features of Duplex Stainless Steel Flanges:
High Strength: ~2x the yield strength of standard austenitic stainless steels like 304/316.
Excellent Corrosion Resistance: Especially against chloride stress corrosion cracking, pitting, and crevice corrosion.
Good Weldability and Formability
Suitable for high-pressure and corrosive applications
📋 Common Grades:
| Grade | UNS Number | Typical Application |
|---|---|---|
| Duplex 2205 | S31803 / S32205 | Oil & gas, desalination, marine systems |
| Super Duplex 2507 | S32750 / S32760 | Offshore platforms, chemical processing |
🔩 Available Flange Types:
Weld Neck Flange (WNRF)
Slip-On Flange (SORF)
Blind Flange (BLRF)
Socket Weld Flange (SWRF)
Threaded Flange (THRF)
Lap Joint Flange (LJRF)
📐 Standards:
ASTM A182 F51, F53, F60
ASME B16.5, B16.47, EN 1092-1, DIN
🏭 SSM Supplies Duplex Stainless Steel Flanges:
SSM offers precision-machined duplex and super duplex flanges with:
Full traceability and EN 10204 3.1/3.2 MTCs
Sizes from ½" to 48"
Pressure classes 150# to 2500#
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