Nickel Alloys · Flanges · ASTM B564 N10276
Hastelloy C276 Flanges
In short: Hastelloy C276 flanges forged to ASTM B564 N10276 are used on C276 chemical piping, or as faced flanges on lined systems.
- N10276
- UNS number
- 8.89
- density, g/cm³
- 3.1 / 3.2
- EN 10204 certificates
- 6
- Hastelloy C276 product forms
Why this combination
Why Hastelloy C276 in flanges
Flange faces in acid service see crevice attack; C276 resists it.
Weld-neck and blind flanges to ASME B16.5 are most common.
Specification
How to specify Hastelloy C276 flanges
NPS ½" – 24" (B16.5), 26" – 60" (B16.47 Series A/B); Class 150, 300, 600, 900, 1500, 2500; EN 1092-1 PN 6 – PN 100 on request
- Specification
- ASTM B564 N10276
- UNS
- N10276
- EN / W.Nr.
- 2.4819
- Dimensions
- ASME B16.5 / B16.47
Sizes and weights
Hastelloy C276 flanges sizes, weighed at 8.89 g/cm³
Other sizes on request. For general flanges information, such as manufacturing routes and end finishes, see the flanges guide.
NPS ½" – 24" (B16.5), 26" – 60" (B16.47 Series A/B); Class 150, 300, 600, 900, 1500, 2500; EN 1092-1 PN 6 – PN 100 on request
Chemistry
Hastelloy C276 composition
- UNS
- N10276
- EN / W.Nr.
- 2.4819 · NiMo16Cr15W
- Density
- 8.89 g/cm³
- PREN
- ≈ 68 – 76
| Element | Limit, % | Why it matters |
|---|---|---|
| Ni | Balance | |
| Mo | 15.0 – 17.0 | |
| Cr | 14.5 – 16.5 | |
| Fe | 4.0 – 7.0 | |
| W | 3.0 – 4.5 | |
| Co | 2.5 max | |
| C | 0.010 max | |
| Si | 0.08 max | |
| Mn | 1.0 max | |
| V | 0.35 max |
Limits per ASTM B575; other product forms and specifications differ slightly. Your order's specification and edition govern.
Questions
About Hastelloy C276 flanges
What spec covers C276 flanges?
ASTM B564 N10276.
Which classes?
Class 150–1500 typically, to order.
From enquiry to dispatch
How a Hastelloy C276 flanges order runs
- 01 EnquiryGrade, specification, size, quantity
- 02 ReviewChecked against your standard
- 03 InspectPMI, dimensions, TPI if required
- 04 CertifyEN 10204 3.1 / 3.2, heat traceable
- 05 ShipPacked and documented for the destination
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