Hastelloy C-276 ASTM B564 N10276 Weld Neck Flanges Manufacturer & Supplier
We are a trusted manufacturer and exporter of Hastelloy C-276 Weld Neck Flanges, according to ASTM B564 UNS N10276 specifications. our high-performance corrosion-resistant flanges are widely used in chemical processing, marine environments, and high-temperature applications where superior strength and resistance to aggressive media are required.
Alloy C-276 is a nickel-chrome-molybdenum alloy with tungsten. It is characterized by an extraordinary resistance across a wide range of corrosive, watery media; in particular oxidizing and reducing acids.
ASTM B564 N10276 Flange specification
- Material Grade: Hastelloy® C-276 / UNS N10276
- Specification: ASTM B564
- Flange Type: Weld Neck (WN), raised face or RTJ options
- Size Range: ½” to 24” or custom sizes
- Pressure Ratings: ANSI Class 150 to 2500
- Standards: ASME B16.5, B16.47, EN 1092-1, DIN, JIS
ASTM B564 N10276 Chemical Composition
| Grade | % | Ni | Cr | Mo | Fe | W | Co | C | Mn | Si | V | P | S |
| C-276 | Min | Bal. | 14.5 | 15 | 4 | 3 | |||||||
| Max | 16.5 | 17 | 7 | 4.5 | 2.5 | 0.01 | 1 | 0.08 | 0.35 | 0.04 | 0.03 |
Hastelloy C276 Mechanical properties(Minimum value at 20℃)
| Tensile Strengthσb/MPa | Yield Strengthσp0.2/MPa | Elongationσ5 /% |
| 690 | 283 | 40 |
Heat Treatment of ASTM B564 N10276
ASTM B564 N10276 flanges are typically supplied in the solution-annealed condition:
- Solution Annealing Temperature: 2050°F (1121°C)
- Cooling Method: Rapid water quench
- Purpose: Restores corrosion resistance, improves ductility, relieves forming stresses
Advantages of Hastelloy C-276 Flanges:
- Outstanding resistance to oxidizing and reducing agents
- Excellent performance in chloride-containing and acidic environments
- Suitable for harsh industries like chemical processing, pulp and paper, marine, and pollution control
- Superior mechanical strength at elevated temperatures
Available Types:
| Standard | ASTM B564 |
|---|---|
| Material Grade | Hastelloy C-276 (UNS N10276) |
| Form | Forged Flanges |
| Product Types | Weld Neck, Blind, Slip-On, Socket Weld, Lap Joint, Threaded |
| Dimensions | ASME B16.5, ASME B16.47, MSS SP-44, DIN, JIS, EN 1092-1 |
| Pressure Classes | 150#, 300#, 600#, 900#, 1500#, 2500# |
Certification & Testing
- ASTM B564 compliant
- Mill Test Certificate (EN 10204 3.1 / 3.2)
- PMI, UT,, and third-party inspections
- NACE compliance available
ASTM B564 N10276 Flange Order Example
Product: ASTM B564 N10276 Weld Neck Flange
Type: Weld Neck, Raised Face
Size: 6″
Pressure Class: 300#
Standard: ASME B16.5
Facing: RF
Schedule (Bore): SCH 40
Quantity: 12 pcs
Heat Treatment: Solution Annealed
Certification: EN 10204 3.1
Order Example (Short Form):
WNF 6″ × 300# RF ASTM B564 N10276 SCH 40 – Qty: 12 – SA – 3.1 Cert.
Related Products
- Hastelloy C276 Slip On Flanges (SO)
- ASTM B564 N10276 Blind Flanges (BLRF)
- N10276 Socket Weld Flanges
- Hastelloy C276 Lap Joint Flanges
- Threaded Flanges (THRF)
- ASTM B564 UNS N06625 (Inconel 625) Flanges
- ASTM B564 UNS N08825 (Incoloy 825) Flanges
- ASTM B564 UNS N06022 (Hastelloy C22) Flanges
Why Choose ASTM B564 N10276 Flanges Weld Neck?
Selecting ASTM B564 N10276 Flanges Weld Neck ensures your piping system is built with materials that exceed industry standards.
