Hastelloy C276 ElbowASTM B366 · ASME B16.9 · Manufacturer, stockist & exporter, India
Alloy C-276 · UNS N10276
A Hastelloy C276 elbow is a fitting that changes the direction of a pipe run, made from Hastelloy C276 to ASTM B366 WPHC276 (buttweld) · ASTM B462 / B564 (forged). Elbows come in 45°, 90° and 180° (return) angles. Long-radius (1.5D) is the default for flow; short-radius (1D) saves space. Buttweld elbows follow ASME B16.9; socket-weld and threaded elbows follow ASME B16.11.
- ASTM B366
- ASME B16.9
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is a Hastelloy C276 Elbow?
- What it is
- A fitting that changes the direction of a pipe run
- Material
- ASTM B366 WPHC276 (buttweld) · ASTM B462 / B564 (forged)
- Dimensions
- ASME B16.9 · B16.28 · B16.11
- Grade
- Hastelloy C276 · UNS N10276
- Best at
- The most aggressive mixed acids, wet chlorine and hypochlorite
Hastelloy C276 Elbow Specification
| Product | Hastelloy C276 Elbow |
|---|---|
| Material standard | ASTM B366 WPHC276 (buttweld) · ASTM B462 / B564 (forged) |
| Dimensional standard | ASME B16.9 · B16.28 · B16.11 |
| Sizes | Buttweld ½" – 48" · forged ⅛" – 4" |
| Wall / class | Schedule to match pipe · Class 3000 / 6000 (forged) |
| Ends | Bevelled to ASME B16.25 |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose an Elbow
Elbows come in 45°, 90° and 180° (return) angles. Long-radius (1.5D) is the default for flow; short-radius (1D) saves space. Buttweld elbows follow ASME B16.9; socket-weld and threaded elbows follow ASME B16.11.
- LR (1.5D) and SR (1D) radius
- 45°, 90° and 180° return
- Seamless or welded construction
More on choosing: Elbow guide.
Hastelloy C276 Elbow: Why C276 for elbows
Elbows come in 45°, 90° and 180° (return) angles. Long-radius (1.5D) is the default for flow; short-radius (1D) saves space. Buttweld elbows follow ASME B16.9; socket-weld and threaded elbows follow ASME B16.11. In Hastelloy C276, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Nickel-alloy fittings match nickel-alloy pipe in aggressive media. Hastelloy C276 is picked for the most aggressive mixed acids, wet chlorine and hypochlorite. |
|---|---|
| Typical service | Chemical processing — Reactors, heat exchangers and piping for mixed acids. |
| Welding to carbon steel | A nickel-base filler such as ERNiCr-3 (or ERNiCrMo-3) is used when joining it to carbon steel |
| Matching filler | ERNiCrMo-4 (AWS A5.14) |
| Sour service | Listed in NACE MR0175 / ISO 15156-3 within its limits — state it on the order |
Hastelloy C276 Elbow Chemical Composition
| Element | Weight % |
|---|---|
| Nickel | Balance |
| Molybdenum | 15.0 – 17.0 |
| Chromium | 14.5 – 16.5 |
| Iron | 4.0 – 7.0 |
| Tungsten | 3.0 – 4.5 |
| Cobalt | 2.5 max |
| Carbon | 0.010 max |
| Manganese | 1.0 max |
Hastelloy C276 Elbow Mechanical Properties
| Solution-annealed plate & sheet | Value |
|---|---|
| Tensile strength | 690 MPa · 100 ksi |
| Yield strength 0.2% | 283 MPa · 41 ksi |
| Elongation | 40% |
Full chemistry, properties and equivalents are on the Hastelloy C276 grade page.
Other Hastelloy C276 pipe fittings
Hastelloy C276 Elbows for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiHastelloy C276 Elbow dimensions — ASME B16.9
Values in mm, the same for every material; the wall thickness matches the pipe schedule.
| NPS | OD | 90° LR elbow A | 45° elbow B | 90° SR elbow |
|---|---|---|---|---|
| ½" | 21.3 | 38 | 16 | — |
| ¾" | 26.7 | 38 | 19 | — |
| 1" | 33.4 | 38 | 22 | 25 |
| 1½" | 48.3 | 57 | 29 | 38 |
| 2" | 60.3 | 76 | 35 | 51 |
| 3" | 88.9 | 114 | 51 | 76 |
| 4" | 114.3 | 152 | 64 | 102 |
| 6" | 168.3 | 229 | 95 | 152 |
| 8" | 219.1 | 305 | 127 | 203 |
| 10" | 273.1 | 381 | 159 | 254 |
| 12" | 323.9 | 457 | 190 | 305 |
| 16" | 406.4 | 610 | 254 | 406 |
| 20" | 508.0 | 762 | 318 | 508 |
| 24" | 610.0 | 914 | 381 | 610 |
Full chart: ASME B16.9 fitting dimensions.
Hastelloy C276 Elbow — questions buyers ask
Long radius or short radius elbow?
Long radius gives lower pressure drop and is the default. Short radius is used where space is tight, with a small pressure-rating reduction per ASME B16.9.
Can Hastelloy C276 elbows be welded to carbon steel?
Yes — a nickel-base filler such as ERNiCr-3 (or ERNiCrMo-3) is used when joining it to carbon steel.
Which standard covers Hastelloy C276 elbows?
The material is ASTM B366 WPHC276 (buttweld) · ASTM B462 / B564 (forged); dimensions follow ASME B16.9 · B16.28 · B16.11. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a Hastelloy C276 elbow?
The alloy price, the size and schedule or class, quantity, and the testing and documents required. Send your list and we quote the same working day.
Can you supply Hastelloy C276 elbows to NACE MR0175?
Yes. Hastelloy C276 is listed in NACE MR0175 / ISO 15156-3 within its limits; state NACE compliance on the order and it is confirmed on the certificate.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026