Hastelloy C-22
Nickel-chromium-molybdenum-tungsten alloy with improved resistance to oxidizing media versus C-276.
Material overview
Hastelloy C-22 is included in the Nickel-Based Alloys catalog. Nickel-chromium-molybdenum-tungsten alloy with improved resistance to oxidizing media versus C-276. Key characteristics for evaluation include Higher chromium for oxidizing acids and chloride media, excellent pitting and crevice corrosion resistance, and versatile filler metal. Typical applications include Chemical processing, chlorination systems, Mixed-acid service, weld overlay, and reactive metals handling. The dataset currently includes 14 property records covering chemical composition, mechanical properties, and physical properties. Associated standards include B574, B575, B622, and GB/T 15007, and product form records cover Bar / Rod and Plate. Final chemistry, mechanical properties, heat treatment, dimensions, inspection, and documentation must be confirmed against the applicable specification and mill certificate.
Key characteristics
- Higher chromium for oxidizing acids and chloride media
- excellent pitting and crevice corrosion resistance
- versatile filler metal
Typical applications
- Chemical processing
- chlorination systems
- weld overlay
- reactive metals handling
Grade names and equivalents
Technical properties
Typical values are for reference only. Final chemistry, mechanical properties, heat treatment, dimensions, inspection, and documentation are confirmed against the applicable specification and MTC/COA before order acceptance.
Chemical composition
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Ni | balance | wt% | Typical value |
| Cr | 20.0-22.5 | wt% | Typical value |
| Mo | 12.5-14.5 | wt% | Typical value |
| W | 2.5-3.5 | wt% | Typical value |
| Fe | 2.0-6.0 | wt% | Typical value |
| Co | 2.5 max | wt% | Typical value |
| C | 0.015 max | wt% | Typical value |
| Mn | 0.5 max | wt% | Typical value |
| V | 0.35 max | wt% | Typical value |
Mechanical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Tensile strength | min 690 | MPa | Solution annealed |
| Yield strength 0.2% | min 310 | MPa | Solution annealed |
| Elongation | min 45 | % | Solution annealed |
Physical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Density | 8.69 | g/cm3 | Typical |
| Melting range | 1351-1387 | C | Typical |
Standards and specifications
Forms, applications, and capabilities
Industries
- Petrochemical & Chemical
- Industry