Nickel Hastelloy C276 UNS N10276
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Nickel Hastelloy C276 is a nickel-molybdenum-chromium superalloy with an addition of tungsten designed to have excellent corrosion resistance in a wide range of severe environments. The high nickel and molybdenum contents make the nickel steel alloy especially resistant to pitting and crevice corrosion in reducing environments while chromium conveys resistance to oxidizing media. The low carbon content minimizes carbide precipitation during welding to maintain corrosion resistance in as-welded structures. This nickel alloy is resistant to the formation of grain boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process application in an as welded condition.
Chemical composition
| Composition |
USN N10276 |
| 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 | 0.02 max |
| Silicon | 0.08 max |
| Manganese | 1.0 max |
| Vanadium | 0.35 max |
| Phosphorus | 0.030 max |
| Sulfur | 0.030 max |
| Nickel | Balance |
Physical properties
| Metric | English | |
| Density | 8.89 g/cm³ | 0.321 lbs/in³ |
| Modulus of Elasticity | 205 GPa | 29.8 Mpsi |
| Electrical Resistivity | 130 µohm*cm | 51 µohm*in |
| Thermal Conductivity | 9.8 W/(m*°C) | 67.9 BTU*in/(hr*ft²*°F) |
| Coefficient of thermal expansion | 11.2 µm/(m*°F) | 6.2 µin/(in*°F) |
Mechanical properties
| Cold worked % |
Yield strength |
Ultimate tensile strength |
Elongation |
| 0 | 455 MPa [66 ksi] | 842 MPa [122 ksi] | 40 |
| 40 | 1310 MPa [190 ksi] | 1531 MPa [222 ksi] | 3.8 |
| 55 | 1531 MPa [222 ksi] | 1758 MPa [255 ksi] | 3.4 |
|
75 |
1724 MPa [250 ksi] | 1999 MPa [290 ksi] | 3.9 |
Characteristics of Nickel Hastelloy Alloy C276
Corrosion resistance: Hastelloy C276 has excellent corrosion resistance in a wide range of environments, including those containing sulfuric acid, hydrochloric acid, and chlorine. It also performs well in environments with high temperatures and high pressures.
High strength: Hastelloy C276 has a high tensile strength and can be used in applications where high strength is required.
Excellent weldability: Alloy C276 can be easily welded using all standard welding methods including gas tungsten arc welding, shielded metal arc welding, and electron beam welding. This makes it a convenient choice for fabrication.
Great formability: Hastelloy C276 has good formability and can be easily formed into a variety of shapes.
Non-magnetic: Hastelloy C276 is non-magnetic and has low magnetic permeability.
Non-toxic: The alloy is non-toxic and is therefore suitable for use in the pharmaceutical and food processing industries.
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