Shape

ASTM A182 Duplex Steel F51 / UNS 31803 / 329LL / URANUS 45N Flanges are flanges made from a specific grade of duplex stainless steel, known by various designations, including F51, UNS 31803, 329LL, and URANUS 45N. Duplex stainless steels are a family of stainless steels with a microstructure consisting of equal amounts of austenite and ferrite phases, providing a unique combination of properties. The chemical composition of F51/UNS 31803/329LL/URANUS 45N typically includes around 22% chromium (Cr), 5.5% to 6.5% nickel (Ni), 3% to 3.5% molybdenum (Mo), and small amounts of other elements like nitrogen (N) and manganese (Mn).

One of the key features of ASTM A182 Duplex Steel F51 / UNS 31803 / 329LL / URANUS 45N Flanges is their exceptional corrosion resistance. The high chromium and molybdenum content provide good resistance to both general corrosion and localized corrosion, including pitting and crevice corrosion. This makes them suitable for use in aggressive environments, such as seawater, chloride-containing solutions, and acidic environments.

These flanges also offer high strength and toughness due to their duplex microstructure, combining the mechanical properties of both austenitic and ferritic stainless steels. As a result, F51/UNS 31803/329LL/URANUS 45N flanges can withstand high-pressure and high-temperature applications, making them well-suited for critical components in challenging industrial settings.

Duplex Steel UNS S31803 Flanges

ASTM A182 Duplex Steel F51 / UNS 31803 / 329LL / URANUS 45N Flanges are typically supplied in the solution-annealed condition and do not require further heat treatment after manufacturing. This ensures that the material retains its desirable properties and allows for ease of fabrication and installation.

Bhansali EnterprisesDuplex Steel ASTM A182 Flange Specifications

Standard ASTM A182 / ASME SA182, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges
Dimension ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Flanges Size 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Pressure Class PN 2.5 TO PN 400
Pressure Rating ANSI Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Pressure Calculation in DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
Table D, E, F, H
Types Forged / Threaded / Screwed / Plate
Form Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange, Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange.
Flanges Marking All Flanges are marked as follows: Grade, Standard, Thickness, Heat No. (Or according to the customer’s request.)

LogoURANUS 45N Flange Equivalent Grades

Shape
STANDARD WERKSTOFF NR. UNS
Duplex S31803 1.4462 S31803

LogoChemical Composition of Duplex Steel 329LL Flanges

Shape
Grade C Mn Si P S Cr Mo Ni N Fe
Duplex S31803 0.030 max 2 max 1 max 0.030 max 0.020 max 22 - 23 3 - 3.50 4.50 - 6.50 0.14 - 0.20 Bal

LogoMechanical Properties of Duplex Steel S31803 Flange

Shape
Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
7.8 g/cm3 1350 °C (2460 °F) Psi – 116000 , MPa – 800 Psi – 80000 , MPa – 550 15 %

Bhansali Enterprises Available Variations in Duplex Steel ASTM A182 Flanges

Duplex Steel ASTM A182 Slip On Flange

Slip On Flanges

Duplex Steel ASTM A182 Slip On Flange

Duplex Steel F51 Weld Neck Flanges

Weld Neck Flange

Duplex Steel F51 Weld Neck Flange

Duplex Steel 329LL Blind Flange

Blind Flange

Duplex Steel 329LL Blind Flange

UNS S31803 Socket Weld Flange

Socket Weld Flange

UNS S31803 Socket Weld Flange

Duplex Steel ASTM A182 Ring Type Joint Flange

Ring Type Joint Flange

Duplex Steel F51 Ring Type Joint Flange

URANUS 45N Threaded Flange

Threaded Flange

URANUS 45N Threaded Flange

Duplex Steel F51 Forged Flange

Forged Flange

Duplex Steel F51 Forged Flange

UNS S31803 Lap Joint Flange

Threaded Flange

UNS S31803 Lap Joint Flange

DSS F51 Spectacle Blind Flange

Spectacle Blind Flange

DSS F51 Spectacle Blind Flange

Bhansali EnterprisesOther Types Of Duplex Stainless Steel S31803 Flanges

  • UNS S31803 Orifice Flange
  • Duplex Steel ASTM A182 Square Flange
  • Duplex Steel 1.4462 Pipe Flanges
  • Duplex Steel S31803 Lap Joint Flange
  • Duplex Steel 1.4462 Spectacle Blind Flange
  • URANUS 45N Hexagonal Flange
  • 1.4462 Tongue & Groove Flange
  • ASTM A182 DSS S31803 Reducing Flange
  • ASME SA182 S31803 Duplex Stainless Steel Flange
  • Duplex Steel UNS S31803 Threaded Flange
  • WNR 1.4462 Industrial Flanges
  • Duplex Stainless Steel S31803 WNFF Flange
  • Duplex Steel F51 Long Weld Neck Flange
  • Duplex Stainless Steel 329LL WNRTJ Flange
  • DSS F51 Expander Flange
  • Duplex Steel S31803 Welding Neck Flange
  • Duplex Stainless Steel F51 SORF Flange
  • ASTM A182 Duplex 329LL BLRF Flange
  • URANUS 45N Spades Ring Flanges
  • Duplex Steel S31803 Socket Welding Flange
  • Duplex Steel F51 Raised Face Flange
  • 1.4462 Loose Flanges
  • UNS S31803 Spades Ring Spacers Flanges
  • Duplex 1.4462 Loose Flanges
  • DSS 329LL Flat Face Flange Stock
  • ASME SA182 Duplex Steel F51 Screwed Flanges
  • Duplex Stainless Steel S31803 Nipo Flanges
  • Duplex Steel UNS S31803 Plate Flange
  • URANUS 45N Male & Female Flanges
  • Duplex Steel 1.4462 PN 10 Flange
  • Steel S31803 Nipoflange
  • Duplex Stainless Steel S31803 Flat Face Flange
  • Duplex Stainless Steel S31803 RTJF Flanges
  • ASME SA182 Duplex Steel F51 Puddle Flanges
  • Duplex Stainless Steel S31803 SOFF Flanges
  • ASME SA182 Duplex Steel 329LL BLRF Flanges
  • UNS S31803 High Hub Blinds Flanges
  • ASME B16.5 Duplex Stainless Steel S31803 Flanges

Bhansali EnterprisesDuplex Steel UNS S31803 Flanges Technical Data

Bhansali EnterprisesDuplex Steel URANUS 45N Flanges Industrial Application

These flanges find a wide range of applications across various industries, including oil and gas, petrochemical, chemical processing, and marine engineering. In the oil and gas industry, they are used in offshore platforms, subsea equipment, and pipelines due to their excellent corrosion resistance in seawater environments. In chemical processing plants, they are employed in equipment handling corrosive chemicals and acidic solutions. Additionally, their strength and toughness make them suitable for high-pressure applications in heat exchangers, pressure vessels, and valves. Their weldability and formability also contribute to their versatility in various piping and structural applications.

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  • Oil & Gas Industry

  • Power Plant Generation

  • Marine Industry

  • Petrochemical Industry

  • Chemical Industry

  • Aerospace Industry

  • Sugar Industry

Bhansali EnterprisesDuplex Steel 329LL Flanges Price Details

Prices for Duplex Steel ASTM A182 Flanges Products are very affordable. Please click on the request a quote button or Click Here to request the updated price list and ready stock information along with your requirement. Bhansali Enterprise Duplex Steel URANUS 45N maintains a stock of all standard items and can export them at the best price ASME SA182 Duplex Steel F51 WNRF Flanges, Slip On Flanges, Weld Neck Flanges, Blind Flanges, SWRF Flanges, RTJ Flanges, SORF Flanges, BLRF Flanges etc.

Bhansali EnterprisesWe Supply Duplex Steel 329LL Flanges in the following Cities & Countries

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