Difference Between Inconel 825 and 925
Inconel 825
Incoloy® 825 is also known as Nicrofer 4221, Superimphy 82 and Ferrochronin 825. Incoloy® 825 is a Nickel-Iron-Chromium alloy with additions of Molybdenum and Copper. It has excellent resistance to both reducing and oxidising acids, to stress-corrosion cracking and to localised pitting and crevice corrosion. It is also especially resistant to sulphuric and phosphoric acids.
INCOLOY 825 | ALLOY 825 | N08825 | 2.4858 | NICR21MO | NA 16 | XH38BT | ЭП703 | NCF 825 | NFE30C20DUM
Incoloy 825 alos known as Inconel 825. Its is an alloy formulated of Nickel, Chromium and Iron with extension of Molybdenum, Copper and Titanium. The alloy 825 invented to contribute exceptional resistance to many corrosive environments and reducing environments that acquire sulphuric acid and phosphoric acid. The nickel content in the alloy is acceptable for the resistance to chloride ion and stress corrosion cracking. The alloy 825 has exceptional anti- oxidation and non-oxidizing heat acid performance. The titanium content in the alloy sustains to resists intergranular attack after fabrication and pitting. The alloy 825 has good welability by all conventional mechanism.
Inconel 825 Composition
| Grade | Ni | Cr | Fe | Mb | Ti | Cu | Mn | C | S | Al | Si |
| Incoloy 825 | 38.0 – 46.0 | 19.5 – 23.5 | 22.0 min | 2.5 – 3.5 | 0.6 – 1.2 | 1.5 – 3.0 | 1.0 max | 0.05 max | 0.03 max | 0.2 max | 0.5 max |
Inconel 825 Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | BS | EN | OR |
| Incoloy 825 | 2.4858 | N08825 | ЭП703 | NFE30C20DUM | NCF 825 | NA 16 | NiCr21Mo | XH38BT |
Inconel 825 Melting Point, Density and Tensile Strength
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.14 g/cm3 | 1400 °C (2550 °F) | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa – 220 | 30 % |
Inconel 825 Price
| PRODUCT NAME | PACK QTY | PRICE |
|---|---|---|
| Alloy 825 0.5mm thick x 250mm x 250mm | 1 | £42.00 |
| Alloy 825 0.5mm thick x 250mm x 250mm | 2 | £60.00 |
| Alloy 825 0.5mm thick x 250mm x 250mm | 3 | £76.00 |
| Alloy 825 0.5mm thick x 250mm x 250mm | 4 | £91.00 |
| Alloy 825 0.5mm thick x 250mm x 250mm | 5 | £97.00 |
| Alloy 825 0.5mm thick x 250mm x 250mm | 6 | £113.00 |
| Alloy 825 0.5mm thick x 500mm x 500mm | 1 | £77.00 |
| Alloy 825 0.5mm thick x 500mm x 500mm | 2 | £126.00 |
| Alloy 825 0.5mm thick x 500mm x 500mm | 3 | £166.00 |
| Alloy 825 0.5mm thick x 1000mm x 1000mm | 1 | £215.00 |
Incoloy 925
Incoloy 925 (UNS N09925) is an agehardenable nickel based alloy with additions of molybdenum, copper, titanium and aluminum. Alloy 925 offers corrosion resistance comparable with that of alloy 825, but with higher strength obtained by age hardening.
Inconel 925 Chemical Composition
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| 925 | 0.03 max | 1.00 max | 0.05 max | 0.03 max | 1.50 – 3.00 | 22.00 min | 42.00 – 46.00 | 19.55 – 22.50 | 0.01-0.05 max | – |
Inconel 925 Melting Point, Density and Tensile Strength
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 925 | 8.14 g/cm3 | 1343°C | MPa – 650 | MPa – 300 | 30 % |
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.05 g/cm³ | 0.291 lb/in³ |
| Melting point | 1343°C | 2450°F |
Equivalent Grades for Incoloy 925
| STANDARD | WERKSTOFF NR. | UNS | JIS |
| Tube Incoloy 925 Equivalent | – | N09925 | NCF 925 |