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ASTM B564 UNS N10276 / Hastelloy C276 Weld Neck Flange, Raised Face (RF) Class 150/300/600, For Seawater Desalination

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ASTM B564 UNS N10276 / Hastelloy C276 Weld Neck Flange, Raised Face (RF) Class 150/300/600, For Seawater Desalination

Brand Name : YUHONG

Model Number : ASTM B564 Hastelloy C276(UNS N10276)

Certification : PED 4.3 (2014/68/EU) / CE / ISO 9001 / EAC

Place of Origin : China

MOQ : 1PC

Price : Negotiable

Payment Terms : T/T & L/C at sight

Delivery Time : Depends on quantity

Packaging Details : PLY-WOODEN CASE OR PALLET

Standard : ASTM B564, ASME B16.5/B16.47

Material : Hastelloy C276 / UNS N10276 / 2.4819

Dimension : 1/2″ NB TO 60″ NB（DN15 TO DN1500)

Pressure Class : Class 150, 300, 600, 900, 1500, 2500 / PN6-PN64

Heat Treatment : Solution annealed

Face Type : Raised Face (RF)

Inspection : UT, MT, PMI, PT

Common Applications : Chemical processing industry, Pipelines in corrosive environments, Heat exchangers & reactors

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ASTM B564 UNS N10276 / Hastelloy C276 Weld Neck Flange, Raised Face (RF) Class 150/300/600, For Seawater Desalination

Introduction of ASTM B564 UNS N10276 / Hastelloy C276 Weld Neck Flange

Our Hastelloy C276 (UNS N10276) Weld Neck Flanges are manufactured in accordance with ASTM B564 and ASME B16.5/B16.47.

This nickel‑molybdenum‑chromium alloy provides excellent resistance to uniform corrosion, pitting, crevice corrosion, and stress corrosion cracking in extreme environments. Forged, solution annealed, and strictly inspected, our WNRF flanges feature high mechanical strength, good weldability, and long service life.

They are widely used in oil & gas, refinery, petrochemical, chemical processing, desalination, and flue gas desulfurization system. YUHONG can supply full sizes and pressure classes with EN 10204 3.1/3.2, PMI, NDT, and NACE MR0175 certifications available.

I. Applicable Standards & Basic Information of ASTM B564 Hastelloy C276 Weld Neck Flange

Item

Specification

Material Standard

ASTM B564 / ASME SB564 (Nickel Alloy Forgings Standard)

Flange Standard

ASME B16.5 (≤24 inches), ASME B16.47 Series A/B (>24 inches), DIN, EN1092-1, etc.

Material Grade

UNS N10276 / WNr. 2.4819 / Hastelloy C276

Type

Weld Neck (WN) / Raised Face (RF)

Size Range

1/2″ NB to 60″ NB (DN15 to DN1500)

Pressure Class

Class 150, 300, 600, 900, 1500, 2500 / PN6–PN64

II. Chemical Composition (ASTM B564 / UNS N10276)

Element

Content (%)

Function

Nickel (Ni)

Balance (≥50.99)

Base element, provides fundamental corrosion resistance

Molybdenum (Mo)

15.00 – 17.00

Resists reducing media (hydrochloric acid, sulfuric acid); enhances pitting resistance

Chromium (Cr)

14.50 – 16.50

Forms protective oxide film; resists oxidizing media (nitric acid, wet chlorine)

Iron (Fe)

4.00 – 7.00

Provides strength

Tungsten (W)

3.00 – 4.50

Enhances resistance to localized corrosion (pitting/crevice corrosion)

Cobalt (Co)

≤ 2.50

High-temperature stability

Carbon (C)

≤ 0.010

Ultra-low carbon content prevents carbide precipitation during welding, avoiding intergranular corrosion

III. Mechanical Properties (Minimum Values at Room Temperature)

Property

Value

Standard Requirement

Tensile Strength

≥ 690 MPa (100 ksi)

ASTM B462 requires ≥ 690 MPa

Yield Strength (0.2% offset)

≥ 283 MPa (41 ksi)

ASTM B462 requires ≥ 283 MPa

Elongation

≥ 40%

Excellent ductility, easy to form and machine

Density

8.89 g/cm³

—

Melting Point

Approx. 1370 °C

—

Hardness

≤ 100 HRB / ≤ 217 HB

—

Key Performance Advantages of ASTM B564 Hastelloy C276 Weld Neck Flange

  • Corrosion Resistance

- Resists strong acids (HCl, H₂SO₄, H₃PO₄) and chloride-induced pitting, crevice corrosion, and SCC. PREn ~69, far exceeding stainless steel.
- Tungsten (W) addition ensures stability in mixed acid environments.

  • Thermal Stability

- Service range: -196°C to 1040°C.
- Ultra-low carbon allows welding without post-weld heat treatment (PWHT) and eliminates intergranular corrosion risk.

  • Mechanical Connection

- Weld Neck (WN): Tapered neck ensures smooth stress transition and high fatigue resistance—ideal for high-pressure, high-temperature, and cyclic conditions.
- Raised Face (RF): Universal sealing compatible with various gaskets (e.g., spiral wound, graphite).

Typical Application Industries

Industry Specific Applications
Chemical & Petrochemical Reactors, heat exchangers, acid transfer lines, acetic acid/chloride production units
Oil & Gas Offshore platforms, sour gas (H₂S-containing) pipelines, subsea piping systems
Pollution Control Flue gas desulfurization (FGD) systems, waste incineration plants, industrial gas treatment
Pharmaceutical & Food CIP (Clean-in-Place) / SIP (Sterilize-in-Place) systems requiring high purity
Marine Engineering Seawater cooling systems, ballast water systems, desalination plants
Nuclear Power Nuclear fuel reprocessing, radioactive waste treatment systems

ASTM B564 UNS N10276 / Hastelloy C276 Weld Neck Flange, Raised Face (RF) Class 150/300/600, For Seawater Desalination


Product Tags:

Hastelloy C276 weld neck flange

      

ASTM B564 UNS N10276 flange

      

Seawater desalination steel flange

      
Wholesale ASTM B564 UNS N10276 / Hastelloy C276 Weld Neck Flange, Raised Face (RF) Class 150/300/600, For Seawater Desalination from china suppliers

ASTM B564 UNS N10276 / Hastelloy C276 Weld Neck Flange, Raised Face (RF) Class 150/300/600, For Seawater Desalination Images

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