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.
British nickel-strip reference documented in alloy-manufacturer bulletins. This page separates strip from BS 3072 sheet and plate.
| Material specification | BS 3073 |
|---|---|
| Material identification | NA16 / N08825 |
| Product / supply condition | Historical strip; confirm temper, finish and dimensions. |
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 3073 edition and certified material test results for acceptance. Confirm specimen direction, gauge length, thickness and heat treatment.
BS 3073 Grade Reference
NA16 / N08825
| Material specification | BS 3073 |
|---|---|
| Source edition | Historical BS 3073 reference |
| Publication status | Legacy reference — confirm edition and status with BSI |
| Product / supply condition | Historical strip; confirm temper, finish and dimensions. |
| Specification information | The manufacturer bulletins confirm these historical grade/form associations. A current BSI catalogue record was not verified; no current-edition or replacement claim is made. |
| Comparison tables | View the BS 3073 comparison tables |
| Material overview | View Alloy 825 / Incoloy 825 in Materials |
| Source reference | Special Metals — Nickel Alloy Handbook (legacy British designations) |
| Source reference | Special Metals — Nickel 200 and 201 technical bulletin |
| Source reference | Special Metals — MONEL alloy 400 technical bulletin, composition, mechanical data and product specifications |
| Source reference | Special Metals — INCONEL alloy 600 technical bulletin, Tables 1 and 6; product specifications |
| Source reference | Special Metals — INCOLOY alloy 825 technical bulletin, Tables 1 and 5; product specifications |
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