Material Family / HastelloyDoc. RAS·GRD/HASTELLOY-C-276
Hastelloy C-276
Versatile nickel-molybdenum-chromium alloy for extreme corrosion resistance.
Introduction
§01 — GeneralHastelloy C-276 offers exceptional resistance to localized and general corrosion in a wide range of aggressive media. It is widely used in chemical processing, flue-gas desulfurization and pollution control equipment.
ASTM B575ASTM B574ASTM B564UNS N10276
Standard Forms
ForgingWirePlateSheetStripBarTube
Nominal Composition
§02 — Weight % · Typical| Element | Min | Max | Typical |
|---|---|---|---|
| Ni | Bal | Bal | Bal |
| Mo | 15.0 | 17.0 | 16.0 |
| Cr | 14.5 | 16.5 | 15.5 |
| Fe | 4.0 | 7.0 | 5.5 |
| W | 3.0 | 4.5 | 3.8 |
| Co | — | 2.5 | 1.0 |
| Mn | — | 1.0 | 0.5 |
| C | — | 0.01 | 0.005 |
Typical Mechanical Properties
§03 — Room Temp + Elevated| Temp | UTS | 0.2% YS | Elongation | Hardness |
|---|---|---|---|---|
| Room | 790 MPa | 355 MPa | 40% | 90 HRB |
| 200°C | 710 MPa | 320 MPa | 42% | — |
| 400°C | 620 MPa | 300 MPa | 45% | — |
Physical Properties
§04 — Physical| Property | Value | Note |
|---|---|---|
| Density | 8.89 g/cm³ | at 20°C |
| Melting range | 1325 – 1370°C | solidus–liquidus |
| Thermal expansion | 11.2 μm/m·K | 20–100°C |
| Thermal conductivity | 10.1 W/m·K | at 20°C |
| Specific heat | 427 J/kg·K | at 20°C |
Industries & Uses
§05 — ApplicationsIndustries
PetrochemicalChemical ProcessingPower GenerationOil & Gas
Typical Uses
- Chemical reactor internals
- Flue-gas desulfurization scrubbers
- Waste incineration components
- Pulp and paper bleaching vessels
- Sour-gas service piping
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