ASME SB462 UNS N10276 LWN Flange ASME B16.5 Hastelloy C276 Long Weld Neck Flange
B16.5 Hastelloy C276 LWN Flange , ASME SB462 UNS N10276 / 2.4819 Long Weld Neck Flange
Equivalent Grades of ASME SB462 UNS N10276 LWN Flange B16.5 Hastelloy C276 Long Weld Neck Flange
| STANDARD | UNS | WNR. | AFNOR | EN | JIS | OR | GOST |
| Hastelloy C276 | N10276 | 2.4819 | - | NiMo16Cr15W | NW 0276 | ЭП760 | ХН65МВУ |
Chemical Composition of of ASME SB462 UNS N10276 LWN Flange B16.5 Hastelloy C276 Long Weld Neck Flange
| 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 of ASME SB462 UNS N10276 LWN Flange Hastelloy C276 Long Weld Neck Flange
(Minimum value at 20℃)
| Tensile Strengthσb/MPa | Yield Strengthσp0.2/MPa | Elongationσ5 /% |
| 690 | 283 | 40 |
What is the Primary Function of Long Weld Neck Flange?
The primary function of a Long Weld Neck flange is to act as an integral, self-reinforced stress-transition nozzle that disperses pressure-induced and thermal loads over a gradual taper, protects the critical sealing face from welding distortion, and extends the fatigue life of the connection—making it the preferred choice for severe, high-integrity corrosive services like those requiring Hastelloy C-276 (UNS N10276).
Application
- Primary Applications:
- High-pressure chemical reactors.
- Offshore oil & gas manifolds.
- Heat exchangers requiring long nozzle necks.
- Piping systems handling highly corrosive media (HCl, wet H₂S, seawater).
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