Incoloy 825
2.4858Nickel-iron-chromium alloy with Mo, Cu, and Ti additions. Excellent resistance to both reducing and oxidizing acids, stress corrosion cracking, and pitting. Cost-effective alternative to pure Ni alloys. Used in chemical processing, pollution control, oil/gas recovery, and acid production.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | ASTM | USA | UNS N08825 | N08825 | REF |
| 🇪🇺 | EN | Europe | NiCr21Mo | 2.4858 | 100% |
Sources: ASTM B424, DIN 17744
Mechanical properties
Compatibility verdict
Incoloy 825 and NiCr21Mo: 100% composition match
Related materials
Inconel 625
2.4856Nickel-chromium-molybdenum-niobium superalloy. Solid-solution strengthened (no precipitation hardening required). Outstanding corrosion resistance from cryogenic to 982°C. Used for jet engine exhaust systems, marine components, chemical processing, flare stacks, and nuclear applications.
Hastelloy C-276
2.4819The most versatile corrosion-resistant alloy available. Ni-Mo-Cr-W composition resists both oxidizing and reducing environments. Outstanding resistance to pitting, stress corrosion cracking, and wet chlorine gas. Used in chemical processing, flue gas desulfurization, pulp & paper, and waste treatment.
Monel 400
2.4360Nickel-copper alloy with excellent resistance to seawater, hydrofluoric acid, and alkaline environments. One of the few alloys resistant to HF acid at all concentrations. Used for marine engineering, chemical processing, oil refinery piping, and valve/pump components.
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