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ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange
ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange
ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange
ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange
ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange
ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange
ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange
ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange
Specifications
Brand Name :
YUHONG
Model Number :
ASTM A182 F55 Super Duplex Steel Blind Flange
Certification :
ISO, API , ABS, DNV, GL , LR, NK
Place of Origin :
CHINA
MOQ :
1PC
Payment Terms :
L/C,T/T
Delivery Time :
7 DAYS
Packaging Details :
Ply-wooden Case, Pallet
Product Name :
Duplex Steel Flange
Standard :
ASTM A182 / ASME SA182
Material :
F55, UNS S32760, 1.4501
OD :
1/2" to 48"
WT :
Sch 5S to Sch XXS
Class :
150#, 300#, 400#, 600#, 900#, 1500#, 2500#
Type :
WN, SO, BL, SW, LWN
Face :
RF, FF, RTJ
Application :
Petroleum,chemical,etc,fittings And Connection,beer
High Light :
ASTM A182 F55 Super Duplex Steel Flange, UNS S32760 Blind Flange, BLRF Flange
Description

ASTM A182 F55 BLIND FLANGE, UNS S32760 SUPER DUPLEX STAINLESS STEEL FLANGE

ASTM A182 F55 Super Duplex steel blind flange is a solid forged flange manufactured from UNS S32760 (also known as 1.4501), designed to seal pipe ends, pressure vessels, or valve openings. This tungsten-alloyed grade delivers over 550 MPa yield strength and exceptional resistance to chloride pitting and crevice corrosion. Each flange is solution annealed and water quenched to achieve a balanced ferrite-austenite structure. Fully compliant with NACE MR0175 for sour service, it is dimensioned per ASME B16.5 and rated for high-pressure classes. These flanges are critical in subsea systems, desalination plants, and chemical processing where maximum durability and corrosion protection are required.

Chemical Composition % of ASTM A182 F55 Super Duplex Steel WNFF Flange

Chemical Composition Limits
Weight% C Mn P S Si Cr Ni Mo N W
Super Duplex F55 0.03 max 1.00 max 0.03 max 0.01 max 1 max 24-26 4.5-6.5 3-4 0.25 0.08-0.20

Mechanical properties of ASTM A182 F55 Super Duplex Steel WNFF Flange

Alloy Tensile Strength N/mm² Yield Strength 0.2% N/mm² Elongation Hardness HB
Super Duplex F55 860 720 min 16 min 270 max

Key Advantages of ASTM A182 F55 (UNS S32760 / 1.4501) Super Duplex Steel
1. Exceptional Strength-to-Weight Ratio
F55 offers minimum yield strength of 550 MPa, approximately double that of 316/316L stainless steel. This allows for thinner wall sections and lighter flange weights, reducing material costs and structural support requirements.
2. Superior Corrosion Resistance
With a PREN exceeding 40, F55 provides outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments. The addition of tungsten and copper significantly enhances performance in seawater, brackish water, and aggressive chemical media.
3. Sour Service Compliance
Fully NACE MR0175/ISO 15156 certified, making it suitable for oil and gas environments containing hydrogen sulfide (H₂S). This eliminates the need for corrosion inhibitors or additional coatings in sour wells.
4. Fatigue and Erosion Resistance
High hardness and strength provide superior resistance to erosion, cavitation, and fatigue cracking in high-velocity flow conditions, pumping systems, and vibrating pipeline networks

Application

  • Oil & Gas
  • Chemical Processing
  • Desalination Plants
  • Power Generation
  • Marine Engineering

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ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange

ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange

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ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange

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Product Detail
Brand Name :
YUHONG
Model Number :
ASTM A182 F55 Super Duplex Steel Blind Flange
Certification :
ISO, API , ABS, DNV, GL , LR, NK
Place of Origin :
CHINA
MOQ :
1PC
Payment Terms :
L/C,T/T
Contact Supplier
ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange
ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange
ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange
ASTM A182 F55 / UNS S32760 / 1.4501 Super Duplex Steel Flange Forged Steel Blind Flange

Yuhong Group Co.,Ltd

Verified Supplier
14 Years
zhejiang, ningbo
Since 2007
Business Type :
Manufacturer, Distributor/Wholesaler, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Stainless Steel Seamless Pipe, Stainless Steel Seamless Tube, Duplex Stainless Steel Pipe
Total Annual :
50M-70M
Employee Number :
50~850
Certification Level :
Verified Supplier
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