Hastelloy B-2
Nickel-molybdenum alloy with exceptional resistance to reducing environments such as hydrochloric acid.
Material overview
The Nickel-Based Alloys catalog describes Hastelloy B-2 as follows: Nickel-molybdenum alloy with exceptional resistance to reducing environments such as hydrochloric acid. Reviewers should evaluate Excellent resistance to HCl at all concentrations and temperatures and resists stress-corrosion cracking in reducing media. The grade record lists Hydrochloric and acetic acid production, chemical processes, catalysts, and vacuum furnaces among typical applications. The dataset currently includes 13 property records covering chemical composition, mechanical properties, and physical properties. Standards and form records reference B574, B575, B622, and GB/T 15007 and Bar / Rod and Plate. Final supply conditions remain subject to specification, inspection, and export-control review.
Key characteristics
- Excellent resistance to HCl at all concentrations and temperatures
- resists stress-corrosion cracking in reducing media
Typical applications
- Hydrochloric and acetic acid production
- chemical processes
- catalysts
- vacuum furnaces
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 |
| Mo | 26.0-30.0 | wt% | Typical value |
| Fe | 2.0 max | wt% | Typical value |
| Cr | 1.0 max | wt% | Typical value |
| C | 0.02 max | wt% | Typical value |
| Mn | 1.0 max | wt% | Typical value |
| Si | 0.1 max | wt% | Typical value |
| Co | 1.0 max | wt% | Typical value |
Mechanical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Tensile strength | min 760 | MPa | Solution annealed |
| Yield strength 0.2% | min 350 | MPa | Solution annealed |
| Elongation | min 40 | % | Solution annealed |
Physical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Density | 9.22 | g/cm3 | Typical |
| Melting range | 1330-1380 | C | Typical |