Alloy 825 / Incoloy 825
Alloy 825 is a nickel-iron-chromium alloy containing molybdenum, copper and titanium. It is used where resistance to reducing acids, pitting, intergranular attack and stress-corrosion cracking is required.
Alloy 825 / Incoloy 825 Grade Information
Alloy 825 is a nickel-iron-chromium alloy containing molybdenum, copper and titanium. It is used where resistance to reducing acids, pitting, intergranular attack and stress-corrosion cracking is required.
Legacy British sheet and plate specification with manufacturer-documented nickel and nickel-alloy designations.
| Material specification | BS 3072 |
|---|---|
| Material identification | NA16 / N08825 |
| Product / supply condition | Historical sheet and plate; confirm temper and heat treatment. |
Alloy 825 / Incoloy 825 Chemical Composition
Manufacturer alloy composition limits, mass %; selected elements only. These are not the complete acceptance limits of the standard on this page.
| Element / description | Mass % / reference value |
|---|---|
| Ni | 38.0–46.0 |
| Cr | 19.5–23.5 |
| Mo | 2.5–3.5 |
| Cu | 1.5–3.0 |
| Ti | 0.6–1.2 |
| Fe | 22.0 min |
Alloy 825 / Incoloy 825 Mechanical Properties
Published reference values for the stated form and condition. Typical values are not specification acceptance limits.
| Product form / condition | Tensile (MPa) | 0.2% proof / yield (MPa) | Elongation (%) | Data basis |
|---|---|---|---|---|
| Annealed sheet; room temperature | 758 | 421 | 39 | Manufacturer typical values. |
| Annealed plate; room temperature | 662 | 338 | 45 | Manufacturer typical values. |
Manufacturer reference data is shown for comparison. Use the selected BS 3072 edition and certified material test results for acceptance. Confirm specimen direction, gauge length, thickness and heat treatment.
BS 3072 Grade Reference
NA16 / N08825
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