Hastelloy C276
Hastelloy C276 alloy is a kind of alloy with extremely low silicon-carbon content, which is considered to be a universal corrosion-resistant alloy. It is mainly resistant to wet chlorine, various oxidizing chlorides, chloride salt solutions, sulfuric acid and oxidizing salts, and has good corrosion resistance in low-temperature and medium-temperature hydrochloric acid. Therefore, in the past thirty years, it has been widely used in harsh corrosive environments such as chemical industry, petrochemical industry, flue gas desulfurization, pulp and papermaking, environmental protection and other industrial fields.
Content
Chemical composition of Hastelloy C276(%)
| Element | Minimum(%) | Maximum(%) |
|---|---|---|
| Ni | remiander | remiander |
| Cr | 14.5 | 16.5 |
| Fe | 4 | 7 |
| Mo | 15 | 17 |
| W | 3 | 4.5 |
| Co | - | 2.5 |
| C | - | 0.01 |
| Mn | - | 1 |
| Si | - | 0.08 |
| S | - | 0.001 |
| P | - | 0.015 |
| V | 0.1 | 0.3 |
Physical properties of Hastelloy C276
| Property | Value |
|---|---|
| Density | 8.9 g/cm3 |
| Melting range | 1325-1370 ℃ |
| Thermal conductivity | 10.2 W/m•K（at 100℃) |
| Specific heat capacity | 407 J/kg·K (at 20℃) |
| Elastic modulus | 208 GPa |
| Shear modulus | 79 GPa |
| Electrical Resistivity | 1.25μΩ•m |
| Coefficient of Linear Thermal Expansion | 11.7 x 10⁻⁶ ℃/K(at 20~100℃) |
| Property | Value |
|---|---|
| Tensile Strength | 790 MPa (115 ksi) |
| Yield Strength (0.2% Offset) | 355 MPa (51.5 ksi) |
| Elongation | 40% |
| Hardness | Rockwell C (HRC) 32 |
| Modulus of Elasticity | 205 GPa (29700 ksi) |
Applications of Hastelloy C276
- Pulp and paper industry, such as digestion and bleaching vessels
- Scrubbers, reheaters, wet steam fans, etc. in FGD systems
- Equipment and components operating in acidic gas environments
- Reactors for acetic acid and acidic products
- Sulfuric acid condensers
- Methylene diphenyl isocyanate (MDI)
- Production and processing of impure phosphoric acid
