Broad Chemical Resistance
Used in selected applications exposed to aggressive process chemicals; the actual medium, concentration and temperature determine suitability.
HASTELLOY® · Product Details
HASTELLOY® C-276
Nickel–Chromium–Molybdenum Alloy · Corrosion-Resistant Service
HASTELLOY® C-276 is a nickel-chromium-molybdenum alloy selected for a broad range of aggressive chemical environments. Its low carbon and silicon levels support welded fabrication, while its chromium and molybdenum content contributes to resistance to oxidizing and non-oxidizing acids, localized corrosion and chloride-bearing environments.
Ni–Cr–Mo–WAlloy system
8.89 g/cm³Reference density
1323–1371 °CReference melting range
Key Performance Characteristics
UNS N10276 / W. Nr. 2.4819
Localized Corrosion Resistance
Noted for resistance to pitting and crevice attack in chloride-containing environments.
Stress-Corrosion Performance
Offers resistance to chloride-induced stress-corrosion cracking and selected sour-service environments.
Welding & Fabrication
The wrought alloy is ductile, formable and weldable using established procedures appropriate to the material.
Typical Application Areas
Chemical Reactors & Vessels
Selected reactors, process vessels and columns.
Heat Exchangers
Selected heat-transfer equipment exposed to demanding chemical media.
Pollution Control
Selected flue-gas treatment and pollution-control equipment.
Corrosive Process Systems
Selected piping, valves and other components subject to process-specific material selection.
Chemical Composition
Nominal composition, wt.%
| Element | Nominal composition |
|---|---|
| Nickel | Balance (approx. 57%) |
| Chromium | 16% |
| Molybdenum | 16% |
| Iron | 5% |
| Tungsten | 4% |
| Cobalt | 2.5 max. |
| Manganese | 1.0 max. |
| Vanadium | 0.35 max. |
| Silicon | 0.08 max. |
| Carbon | 0.01 max. |
| Copper | 0.5 max. |
Physical Properties
Published reference values
| Property | Reference value |
|---|---|
| Density | 8.89 g/cm³ |
| Melting range | 1323–1371 °C |
| Specific heat at room temperature | 427 J/(kg·°C) |
| Thermal conductivity at 50 °C | 10.5 W/(m·°C) |
Mechanical Properties
Reference data by form and condition
| Product form / condition | Tensile strength | 0.2% yield strength | Elongation |
|---|---|---|---|
| Sheet, 2 mm, room temperature; solution annealed | 792 MPa | 356 MPa | 61% |
| Plate, 25.4 mm, room temperature; solution annealed | 785 MPa | 365 MPa | 59% |
Representative published room-temperature test values for the listed forms and thicknesses. Values change with product form, thickness, condition and specification.
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Technical reference: Haynes International — HASTELLOY® C-276 technical data