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Hastelloy® C-276 Foil/Sheet
Available Configurations
Properties common to all products in this list
| Thickness | Size | Temper ⓘ |
|---|---|---|
| 0.025 mm to 1.2 mm | 10 x 10 mm to 300 x 300 mm | As rolled Annealed Hard |
Need custom configurations? Please contact us.
Key Features
Hastelloy® C276 Foil (Ni 57/Mo 16/Cr 16/Fe 5/W 4, UNS N10276) is a solid-solution-strengthened nickel-molybdenum-chromium alloy foil with the broadest corrosion resistance of any standard Ni-Mo-Cr alloy, combining outstanding resistance to both oxidizing and reducing aggressive media:
Broadest Corrosion Resistance of Any Standard Ni-Mo-Cr Alloy
The high molybdenum content at 16% and tungsten addition combine with chromium to suppress pitting, crevice corrosion, and stress corrosion cracking across the widest range of aggressive environments of any standard Ni-Mo-Cr alloy. This includes chloride-containing environments, hydrochloric and sulfuric acid solutions, and strongly oxidizing media including ferric and cupric chloride solutions that corrode most other alloys.
Outstanding Resistance to Both Oxidizing and Reducing Media
Unlike most corrosion-resistant alloys that favour either oxidizing or reducing conditions, Hastelloy® C276 performs reliably in both, making it the reference alloy for service environments where the oxidizing or reducing character of the process stream may vary or is uncertain.
Good Tensile Strength
Tensile strength of 690–1,000 MPa supports use as a structural liner, heat exchanger plate, and formed barrier element in chemical processing and offshore assemblies where mechanical loading is applied alongside chemical exposure.
High Melting Point
Melting point of 1,323–1,371 °C supports service at elevated temperatures in chemical processing environments where both high-temperature and corrosion resistance are simultaneously required.
Electrical Resistivity and Density
Electrical resistivity of 130 µΩ·cm and density of 8.89 g/cm³ are well-characterized for use in corrosion research and electrochemical studies where defined physical properties of the specimen are required alongside corrosion resistance characterization.
Industrial Applications
Hastelloy® C276 Foil is used across chemical processing, offshore, pharmaceutical, and flue gas desulfurization applications wherever the broadest available corrosion resistance in both oxidizing and reducing aggressive media determines material selection:
- ✦ Chemical Processing Vessel Liner Elements
- Used for chemical processing vessel liner elements in the most aggressive acid and oxidizing chemical environments, where the combined resistance to HCl, H₂SO₄, and oxidizing chloride solutions makes C276 the appropriate choice when less corrosion-resistant alloys would fail.
- ✦ Heat Exchanger Plate and Seal Components in Aggressive Acid Service
- Applied as heat exchanger plate and seal components in aggressive acid service, where the broadest corrosion resistance of any standard Ni-Mo-Cr alloy supports reliable long-term performance in process streams that would attack conventional stainless steels or less corrosion-resistant nickel alloys.
- ✦ Offshore and Subsea Corrosion Barrier Elements in Seawater and Sour Gas
- Used for offshore and subsea corrosion barrier elements in seawater and sour gas environments, where resistance to pitting and crevice corrosion in chloride media and resistance to sulfide stress cracking qualify C276 for the most demanding offshore chemical service.
- ✦ Pharmaceutical and Flue Gas Desulfurization Equipment Lining
- Applied for pharmaceutical and flue gas desulfurization equipment lining, where the combination of chemical resistance across acid and oxidizing media and good mechanical properties supports long service life in aggressive process environments that are specifically demanding for corrosion-resistant materials.
- ✦ Reference Alloy for Corrosion Evaluation and Passive Film Research
- Confirmed as the reference Ni-Mo-Cr alloy for corrosion evaluation in aggressive media, used for electrochemical characterization of passive film behavior in HCl and H₂SO₄, and as a benchmark alloy for pitting resistance studies in chloride solutions where its performance provides the comparative standard for emerging corrosion-resistant alloy compositions.
Material Properties
| Element | Value |
|---|---|
| Hardness - Brinell | 80-200 |
| Elongation at break( % ) | 52 |
| Modulus of elasticity( GPa ) | 170-220 |
| Izod impact strength( J m⁻¹ ) | 42-100 |
| Tensile strength( MPa ) | 550-900 |
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 125-130 |
| Element | Value |
|---|---|
| Maximum use temperature in air( C ) | 1090 |
| Melting point( C ) | 1270-1390 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 427@23°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 10.1-12.5@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 10.8-11.3@20-100 |
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 8.94 |
Tolerances
| Thickness | <0.01mm | ±25% |
|---|---|---|
| Thickness | 0.01mm - 0.05mm | ±15% |
| Thickness | >0.05mm | ±10% |
| Linear dimension | <100mm | ±1mm |
| Linear dimension | >=100mm | +2 / -1% |