Super Duplex Steel Flanges
Super Duplex stainless steel flanges are renowned for their low thermal expansion, high thermal conductivity, and exceptional resistance to corrosion cracking and chloride stress. Grades such as ASTM A182 Duplex UNS S32750 / S32760 Flanges work well in brackish waters, saline environments, bleaching processes, and even food processing. These flanges are manufactured by Metracore Alloys under strict quality standards, ensuring their strength, longevity, and resilience to challenging operating environments.
Super Duplex Steel Flanges, Super Duplex Stainless Steel Flanges, Super Duplex Flanges
These super duplex steel flanges come with strong mechanical properties and reliable specifications. Standards include ASTM A182 / ASME SA182 with grades UNS S32750, S32760, S32950, F51, F53, and F55. Sizes range from 1/8″NB to 48″NB. They show exceptional resistance to chlorides, including stress corrosion cracking (SCC). The higher chromium, molybdenum, and nitrogen levels give a PREN above 40, making them highly resistant to pitting and crevice corrosion. They also show strong resistance to sulfuric acid. Mechanically, they offer higher yield and tensile strength than standard duplex steels while keeping good ductility and formability. They also have excellent fatigue resistance, good weldability, and can absorb high energy during operation.
Super duplex flanges are frequently used in sectors where resistance to corrosion is crucial. Due to their enhanced resistance to pitting and crevice corrosion, Duplex Steel S32205 Flanges are frequently used in chemical processing facilities, desalination plants, and seawater systems. Additionally, they are employed in the food processing, municipal waterworks, pulp and paper, oil and gas, nuclear power plants, and fossil fuel power plants. Heat exchangers, fluid piping, textile equipment, and pharmaceutical processing are some additional uses. Raw super duplex steel is forged or rolled, then machined, heated, solution-annealed and quenched to create these flanges. Each flange is tested with dimensional checks and non-destructive methods to ensure quality.
Super Duplex Steel Flanges Supplier, Super Duplex Flanges Manufacturer In India, Super Duplex Steel Flange Manufacturers
All of our super duplex stainless steel flanges are certified to ASTM, ASME, and EN standards. They comply with dimensional norms such as ASME B16.5 and EN1092. Each product is supplied with mill test certificates (MTCs) confirming chemical composition, mechanical properties, and pressure ratings. To safeguard the flanges during handling and transportation, packaging options include palletised crates, bubble wrap, seaworthy cases and wooden boxes. As a renowned super duplex flanges manufacturer in India, we ensure that each flange satisfies international performance and dependability standards.

- Super Duplex Steel Flanges Specification
- Types of Super Duplex Steel Flanges
- Super Duplex Steel Flanges Face Forms
- Technical Details of Super Duplex Steel Flanges
- Super Duplex Flange Pressure Rating
- Super Duplex Blind Flange Tensile Strength
- SDSS Weld Neck Flanges Hardness
- Manufacturing Process of Super Duplex Steel Flanges
- Super Duplex Steel Flanges Application
Super Duplex Steel Flanges Specification

Standard
ASTM A182 / ASME SA 182

Dimensions
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.

Sizes in Stock
1/2″NB TO 60″NB

Flanges Process
Forging, Rolling, Casting

Types of Flanges
Threaded / Screwed / Forged / Plate

Class / Pressure
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Flange Face Type
Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Flange Thread
FNPT, NPT, BSPT, MNPT, BSPP
Types of Super Duplex Steel Flanges

Super Duplex Steel Slip On Flanges

Super Duplex Steel Socket Weld Flanges

Super Duplex Steel Blind Flanges

Super Duplex Steel Weld Neck Flanges

Super Duplex Steel Threaded / Screwed Flanges

Super Duplex Steel Lap Joint Flanges

Super Duplex Steel Long Weld Neck Flanges

Super Duplex Steel Spectacle Blind Flanges

Super Duplex Steel Reducing Flanges
Super Duplex Steel Flanges Face Forms

Raised Face (RF)

Ring Type Joint (RTJ)

Flat Face (FF)

Lap-Joint Face (LJF)
Reach out to Metracore Alloys for reliable Super Duplex Steel Flanges solutions
Technical Details of Super Duplex Steel Flanges
Super Duplex Flange Pressure Rating
| Temperature In °F | Working Pressure in Class 75 to 2500 In PSI | |||||||
|---|---|---|---|---|---|---|---|---|
| CL 75 | CL 150 | CL 300 | CL 400 | CL 600 | CL 900 | CL 1500 | CL 2500 | |
| -20~100 | 145 | 290 | 750 | 1000 | 1500 | 2250 | 3750 | 6250 |
| 200 | 130 | 260 | 745 | 990 | 1490 | 2230 | 3720 | 6200 |
| 400 | 100 | 200 | 615 | 820 | 1230 | 1845 | 3070 | 5120 |
| 600 | 70 | 140 | 555 | 740 | 1115 | 1670 | 2785 | 4640 |
| 700 | – | 110 | 540 | 725 | 1085 | 1625 | 2710 | 4520 |
Super Duplex Blind Flange Tensile Strength
| Grade | A182 F53 | A182 F55 |
| Tensile Strength, Min. (KSI) | 116 | 109 |
SDSS Weld Neck Flanges Hardness
| Grade | A182 F53 | A182 F55 |
| Hardness, (Maximum) Brinell | 310 | 300 |
Manufacturing Process of Super Duplex Steel Flanges

Super Duplex Steel Flanges Application









Products
Exporter, Manufacturer & Supplier of Super Duplex Steel Flanges in various material and sizes.
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