Incoloy 825
Nickel-iron-chromium alloy with molybdenum and copper for resistance to reducing and oxidizing acids.
Material overview
Incoloy 825 is recorded in the Nickel-Based Alloys catalog. Nickel-iron-chromium alloy with molybdenum and copper for resistance to reducing and oxidizing acids. Its recorded characteristics include Excellent resistance to sulfuric and phosphoric acids, resists chloride stress-corrosion cracking, and titanium stabilized. Typical applications include Acid production and pickling equipment, chemical processing, oil and gas, and pollution control. The dataset currently includes 16 property records covering chemical composition, mechanical properties, and physical properties. Related standards include B425, B424, and GB/T 15007; product form data covers Seamless Pipe / Tube, Plate, and Bar / Rod. The final chemistry, condition, dimensions, test requirements, and documentation package must be confirmed before order acceptance.
Key characteristics
- Excellent resistance to sulfuric and phosphoric acids
- resists chloride stress-corrosion cracking
- titanium stabilized
Typical applications
- Acid production and pickling equipment
- chemical processing
- oil and gas
- pollution control
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 | 38.0-46.0 | wt% | Typical value |
| Cr | 19.5-23.5 | wt% | Typical value |
| Fe | 22.0 min | wt% | Typical value |
| Mo | 2.5-3.5 | wt% | Typical value |
| Cu | 1.5-3.0 | wt% | Typical value |
| Ti | 0.6-1.2 | wt% | Typical value |
| C | 0.05 max | wt% | Typical value |
| Mn | 1.0 max | wt% | Typical value |
| Si | 0.5 max | wt% | Typical value |
| Al | 0.2 max | wt% | Typical value |
Mechanical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Tensile strength | min 586 | MPa | Annealed |
| Yield strength 0.2% | min 241 | MPa | Annealed |
| Elongation | min 30 | % | Annealed |
| Hardness | max 192 HB | HB | Annealed |
Physical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Density | 8.14 | g/cm3 | Typical |
| Melting range | 1370-1400 | C | Typical |
Standards and specifications
Forms, applications, and capabilities
Product forms
Industries
- Petrochemical & Chemical
- Industry
- Industry
- Industry