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B564 Hastelloy C276 Flange Corrosion-Resistant N10276 Long Weld Neck

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B564 Hastelloy C276 Flange Corrosion-Resistant N10276 Long Weld Neck

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Brand Name :YUHONG
Model Number :ASTM B564 HASTELLOY C276
Certification :ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin :CHINA
MOQ :1PC
Price :Negotiable
Payment Terms :T/T, L/C AT SIGHT
Supply Ability :500 pcs per month
Delivery Time :Depends on quantity
Packaging Details :Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Product Name :LONG WELD NECK FLANGE
Standard :ASTM B564 / ASME SB564
Material Grade :HASTELLOY C276 Flange, UNS (N10276), DIN (2.4819)
Dimensions :ANSI/ASTM B16.5
Size :Customized
Flange Type :Plate Face (FF), Rasied Face (RF), Ring Type Joint (RTJ)
Connection :Welded
Class/Pressure :150#,300#,600#,900#,1500#,2500#,PN6,PN10,PN16,PN25,PN40,PN64,etc.
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B564 Hastelloy C276 Flange Corrosion-Resistant N10276 Long Weld Neck

What is Hastelloy C276 Flange?

Hastelloy C276 is a corrosion-resistant nickel-molybdenum-chromium alloy that is highly versatile and offers excellent resistance to a wide range of corrosive environments. Hastelloy C276 flanges are commonly used in industries where corrosive chemicals, acids, and high temperatures are present. Some of the common applications and industries where Hastelloy C276 flanges are used include:

  • 1. Chemical processing: Hastelloy C276 flanges are widely used in chemical processing industries such as petrochemical plants, chemical manufacturing facilities, and pharmaceutical plants. They are resistant to a wide range of corrosive chemicals, acids, and solvents, making them ideal for handling and processing corrosive substances.
  • 2. Oil and gas industry: Hastelloy C276 flanges are utilized in the oil and gas industry for various applications such as offshore drilling platforms, refineries, and pipelines. They offer excellent resistance to corrosion in harsh environments and high temperatures, making them suitable for use in oil and gas processing equipment.
  • 3. Power generation: Hastelloy C276 flanges are commonly used in power generation facilities, including nuclear power plants and thermal power plants. They provide excellent corrosion resistance in high-temperature and high-pressure environments, making them ideal for use in boilers, heat exchangers, and other power generation equipment.
  • 4. Pollution control: Hastelloy C276 flanges are employed in pollution control equipment, such as scrubbers, exhaust systems, and wastewater treatment plants. They can withstand exposure to corrosive gases, acids, and chemicals, making them suitable for use in environmental protection systems.
  • 5. Aerospace and defense: Hastelloy C276 flanges are utilized in aerospace and defense applications, where corrosion resistance and high performance under extreme conditions are essential. They are used in gas turbines, jet engines, and other critical components that operate in demanding environments.


Overall, Hastelloy C276 flanges are known for their exceptional corrosion resistance, high strength, and versatility, making them a preferred choice for a wide range of industries and applications where corrosion-resistant materials are required.

Equivalent Grades for Hastelloy Alloy C276

STANDARD UNS WNR. AFNOR EN JIS OR GOST
Hastelloy C276 N10276 2.4819 - NiMo16Cr15W NW 0276 ЭП760 ХН65МВУ

Chemical Composition for Hastelloy Alloy C276

Hastelloy C276 Ni C Mo Mn Si Fe P S Co Cr
Balance 0.010 max 15.00 – 17.00 1.00 max 0.08 max 4.00 – 7.00 0.04 max 0.03 max 2.5 max 14.50 – 16.50

Mechanical Properties for Hastelloy Alloy C276

Density Melting Point Yield Strength (0.2%Offset) Tensile Strength Elongation
8.89 g/cm3 1370 °C (2500 °F) Psi – 52,000 , MPa – 355 Psi – 1,15,000 , MPa – 790 40 %

Raised Face Long Weld Neck Flange Tolerance

ASME B16.5 Tolerance
A Outside Diameter (O.D.)
  • When Outside Diameter (O.D.) is 24″ or less: ±1/16″ (1.6 mm)
  • When Outside Diameter (O.D.) is over 24″: ±1/8″ (3.2 mm)
D Inside Diameter
  • 10″ and smaller: ±1/32″ (0.8 millimeter)
  • 12″ thru 18″: +1/8″ (3.2 millimeter)
  • 20″ and larger: -1/16″ (1.6 millimeter)
B Diameter of contact face
  • 1/16″ raised face: ±1/32″ (0.8 millimeter)
  • 1/4″ Raised Face (RF), Tongue & Groove (T/G), (male & female), (m/f): ±1/64″ (0.4 mm)
J Diameter of hub at base
  • When hub base is 24″ or smaller: ±1/16″ (1.6 millimeter)
  • When hub base is over 24″: ±1/8″ (3.2 millimeter)
H Diameter of hub at point of welding
  • 5″ and smaller: +3/32″ (2.4 millimeter), -1/32″ (0.8 millimeter)
  • 6″ and larger: +5/32″ (4.0 millimeter), -1/32 (0.8 millimeter)
P Drilling
  • Bolt circle: ±1/16″ (1.6 millimeter)
  • Bolt hole spacing: ±1/32″ (0.8 millimeter)
Eccentricity of bolt circle with respect to facing
  • 2 1/2″ and smaller ±1/32″ (0.8 millimeter) max.
  • 3″ and larger ±1/16″ (1.6 millimeter) max.
C Thickness
  • 18″ and smaller: ±1/8″ (3.2 millimeter), -0″
  • 20″ and larger: ±3/16″ (4.8 millimeter), -0″
K Length of hub
  • 10″ and smaller: ±1/16″ (1.6 millimeter)
  • 12″ and larger: ±1/8″ (3.2 millimeter)

B564 Hastelloy C276 Flange Corrosion-Resistant N10276 Long Weld Neck

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