Hastelloy C276 — Sheet, Plate, Coil, Pipe & Tube & Fittings
Also sold as Alloy C-276 · UNS N10276 · W.Nr 2.4819 · Nicrofer 5716
Hastelloy C276 is a nickel–molybdenum–chromium alloy with tungsten, chosen for the most aggressive mixed acids, wet chlorine and hypochlorite. We supply it as sheet, plate, coil, pipe & tube, fittings, flanges, fasteners, with EN 10204 3.1 certificates, from Mumbai to India, the Gulf, South-East Asia, South America, Europe, the UK and the USA.
- UNS N10276
- W.Nr 2.4819
- PREN ≈ 68
- ρ 8.89 g/cm³
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
Hastelloy C276 Products
Hastelloy C276 Names, Designations & Composition
Hastelloy C276 is one alloy sold under several names. Its UNS number is N10276, the European material number is W.Nr 2.4819 and the EN name is NiMo16Cr15W. The chart on the right shows the specified range of each main alloying element; the balance is the base metal.
Hastelloy C276 Specifications by Product — Which Standard Applies?
The material standard changes with the product form. This is the table buyers ask for most.
| Product | Material standard | Dimensions |
|---|---|---|
| Hastelloy C276 sheet | ASTM B575 | ASTM A480 / B906 |
| Hastelloy C276 plate | ASTM B575 | ASTM A480 / B906 / A20 |
| Hastelloy C276 coil | ASTM B575 | ASTM A480 |
| Hastelloy C276 pipe & tube | ASTM B622 · ASTM B619 | ASME B36.19 / B36.10 |
| Hastelloy C276 fittings | ASTM B366 WPHC276 · ASTM B462 / B564 | ASME B16.9 · B16.11 |
| Hastelloy C276 flanges | ASTM B462 / B564 | ASME B16.5 · B16.47 |
| Hastelloy C276 fasteners | ASTM F468 (N10276) where specified for applicable bolts, hex cap screws, socket-head cap screws and studs (0.250–1.500 in.), and ASTM F467 for applicable nuts (0.250–1.500 in.); for other types, material may be supplied to ASTM B574 bar where applicable, subject to the purchase specification | ASME B18.2.1 · B18.2.2 |
Hastelloy C276 Chemical Composition
Under technical review for TDS.
| Element | Current requirement |
|---|---|
| Nickel | As specified |
| Molybdenum | As specified |
| Chromium | As specified |
| Iron | As specified |
| Tungsten | As specified |
| Cobalt | As specified |
| Carbon | As specified |
| Manganese | As specified |
| Vanadium | As specified |
| Silicon | As specified |
Numerical specification requirements are published only after the applicable current standard edition has been verified. Governing specification to be verified: ASTM B575 for UNS N10276.
Hastelloy C276 Mechanical Properties
Under technical review for TDS.
| Property | Current requirement |
|---|---|
| Tensile strength | As specified |
| Yield strength 0.2% | As specified |
| Elongation | As specified |
Numerical specification requirements are published only after the applicable current standard edition has been verified. Governing specification and condition to be verified: ASTM B575 for UNS N10276 — Solution-annealed plate & sheet.
Density & Physical Properties
| Property | Value |
|---|---|
| Density | 8.89 g/cm³ |
| Melting range | 1323 – 1371 °C |
| Magnetic | Non-magnetic |
| PREN (approx.) | ≈ 68 |
Hastelloy C276 Equivalent Grades
Hastelloy C276 Corrosion Resistance — What Each Element Does
Very high molybdenum handles hydrochloric and sulphuric acid where other alloys fail.
Chromium adds resistance to oxidising acids, wet chlorine and hypochlorite.
Tungsten further improves pitting and crevice resistance.
Very low carbon and silicon let C276 be used as-welded.
Where Is Hastelloy C276 Used? Applications
Hastelloy C276 vs 625, C22 and 2507
| Grade | PREN (approx.) | Pick it for |
|---|---|---|
| Super Duplex 2507 | ≈ 42 | Seawater and high-chloride service where strength also matters |
| Inconel 625 | ≈ 51 | Seawater, high strength and high temperature in one alloy |
| Hastelloy C22 | ≈ 65 | Mixed oxidising and reducing acids, and weld overlays |
| Hastelloy C276 | ≈ 68 | The most aggressive mixed acids, wet chlorine and hypochlorite |
Welding Hastelloy C276
| Matching filler | ERNiCrMo-4 (AWS A5.14) |
|---|---|
| Also used | ENiCrMo-4 electrode |
Hastelloy C276 for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiHastelloy C276 — questions buyers ask
What is Hastelloy C276?
Hastelloy C276 is a nickel–molybdenum–chromium alloy with tungsten. It is chosen for the most aggressive mixed acids, wet chlorine and hypochlorite.
Which standards cover Hastelloy C276 products?
Sheet: ASTM B575; Plate: ASTM B575; Coil: ASTM B575; Pipe & Tube: ASTM B622 · ASTM B619; Fittings: ASTM B366 WPHC276 · ASTM B462 / B564; Flanges: ASTM B462 / B564; Fasteners: ASTM F468 (N10276) where specified for applicable bolts, hex cap screws, socket-head cap screws and studs (0.250–1.500 in.), and ASTM F467 for applicable nuts (0.250–1.500 in.); for other types, material may be supplied to ASTM B574 bar where applicable, subject to the purchase specification. Always name the standard and edition on your order.
What is the UNS number of Hastelloy C276?
UNS N10276, with the European material number W.Nr 2.4819.
What is the density of Hastelloy C276?
8.89 g/cm³ — use it to calculate weights: plate kg = L(m) × W(m) × t(mm) × 8.89.
Hastelloy C276 or Super Duplex 2507?
Hastelloy C276 suits the most aggressive mixed acids, wet chlorine and hypochlorite; Super Duplex 2507 is the step up for seawater and high-chloride service where strength also matters.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026