Hastelloy C-276
UNS N10276
Overview
The most universally corrosion-resistant nickel alloy available. Outstanding resistance to both oxidizing and reducing environments, including hot contaminated mineral acids, strong oxidizers like ferric and cupric chlorides, wet chlorine gas, and hypochlorite solutions. The first-choice alloy for severe chemical processing where multiple corrosive agents are present.
Chemical Composition (wt%)
| Element | Min | Max |
|---|---|---|
| Ni (Nickel) | 57 | — |
| Cr (Chromium) | 14.5 | 16.5 |
| Mo (Molybdenum) | 15 | 17 |
| W (Tungsten) | 3 | 4.5 |
| Fe (Iron) | 4 | 7 |
| C (Carbon) | — | 0.01 |
| Mn (Manganese) | — | 1 |
| Si (Silicon) | — | 0.08 |
Mechanical Properties
| Property | Value | Condition |
|---|---|---|
| Tensile Strength | ≥ 690 MPa (100 ksi) | — |
| Yield Strength (0.2%) | ≥ 283 MPa (41 ksi) | — |
| Elongation | ≥ 40% | — |
| Hardness | ≤ 22 HRC | annealed |
| Density | 8.89 g/cm³ | — |
Physical Properties
| Property | Value |
|---|---|
| Melting Range | 1323 – 1371 °C |
| Thermal Conductivity | 12.5 W/m·K (at 23°C) |
| Max Service Temp | 1093°C |
Corrosion Resistance
Superior to Inconel 625 in reducing environments. Outstanding resistance to hot contaminated mineral acids (sulfuric, hydrochloric, phosphoric). Excellent resistance to wet chlorine gas, ferric/chloride solutions, and hypochlorite. Resistant to pitting, crevice corrosion, and stress corrosion cracking in chloride environments. The top choice for aggressive chemical processing where multiple corrosive agents coexist.
Typical Applications
Related Standards
Available Products in This Material
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