ASTM A182 F53 Blind Flange RF / RTJ ASME B16.5
ASTM A182 F53 Blind Flange is a high-performance duplex stainless steel flange used to seal the end of piping systems or pressure vessel openings. Manufactured from Duplex 2205 stainless steel, it offers excellent strength, corrosion resistance, and durability in demanding environments.
F53 blind flanges are widely used in oil & gas, offshore platforms, petrochemical plants, chemical processing, and marine industries.
What is ASTM A182 F53?
ASTM A182 F53 is a forged duplex stainless steel grade equivalent to UNS S32750 (Super Duplex 2507 in some standards, depending on chemistry control). It provides:
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High tensile strength
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Excellent resistance to pitting and crevice corrosion
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Superior chloride stress corrosion cracking resistance
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Good weldability and toughness
ASME /ANSI B16.5, B16.47 Weld neck FLANGES SPECIFICATION
C&N is a professional manufacturer of steel forged flange .
duplex stainless stainless steel :A 182 Duplex F51/F53/F44/F55/F60/F61
A182 F53 Duplex 2507 UNS S32750 compostion
| Trade Name | UNS | Super Duplex Industry Specifications | Chemical Composition | Min.Tensile (KSI) |
Min.Yield (KSI) |
Elongation % |
|---|---|---|---|---|---|---|
| SAF 2507® | UNS S32750 | ASTM A182 F53, A240, A276, A479, A789, A790, A815, A928, A988 SAE J405 |
C 0.030 max Cr 24.0-26.0 Cu 0.5 max Mn 1.20 max Mo 3.0-5.0 N 0.24-0.32 Ni 6.0-8.0 P 0.035 max S 0.020 max Si 0.8 max |
116 | 80 | 15 |
Mechanical Properties
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Tensile Strength: ≥ 800 MPa
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Yield Strength: ≥ 550 MPa
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Hardness: ≤ 32 HRC
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Elongation: ≥ 15%
Types of ASTM A182 F53 Blind Flanges
We supply:
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RF (Raised Face) Blind Flange
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RTJ (Ring Type Joint) Blind Flange
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FF (Flat Face) Blind Flange
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Custom machined blind flanges
Available Sizes & Pressure Ratings
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Size: 1/2” to 48”
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Pressure Class: 150, 300, 600, 900, 1500, 2500
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Standards: ASME B16.5, ASME B16.47
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Surface Treatment: Anti-rust oil, black paint, galvanizing (if required)
Applications
ASTM A182 F53 Blind Flanges are ideal for:
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Offshore drilling platforms
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Seawater systems
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Chemical reactors
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Desalination plants
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High-pressure pipelines
Super duplex material can be used for Oil and gas industry equipment, Offshore platforms, heat exchangers, process and service water systems, fire-fighting systems, injection and ballast water systems, Chemical process industries, heat exchangers, vessels, and piping,
Test Certificates: Manufacturer Test Certificate as per EN 10204 / 3.1B,
