Yuhong Group Co.,Ltd
| 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 |
| 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 |
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Product Specification
| 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 | 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 | ||
| High Light | Hastelloy C276 weld neck flange ，ASTM B564 UNS N10276 flange ，Seawater desalination steel flange | ||
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
- 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.
- Service range: -196°C to 1040°C.
- Ultra-low carbon allows welding without post-weld heat treatment (PWHT) and eliminates intergranular corrosion risk.
- 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 |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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