Incoloy 825 UNS N08825 2.4858 Nickel Iron Chromium Alloy Wire International Grade Equivalents
Incoloy 825 Nickel-Iron-Chromium Alloy (UNS N08825)
Incoloy 825 is a nickel-iron-chromium alloy with additions of molybdenum, copper, and titanium, engineered for exceptional corrosion resistance in both oxidizing and reducing environments. We supply Incoloy 825 in wire and other forms with full international grade equivalence, enabling seamless material substitution across US, European, British, French, Chinese, and Japanese standards.
1.International Grade Equivalence Table
| Country / Region | Standard | Designation |
|---|---|---|
| USA | UNS / ASTM | N08825 |
| Germany | DIN / W.Nr. | 2.4858 / NiCr21Mo |
| Europe | EN | 2.4858 (NiCr21Mo) |
| United Kingdom | BS | NA 16 (NiCr21Mo) |
| France | AFNOR | NC21FeDu |
| China | GB | 0Cr21Ni42Mo3Cu2Ti (NS142) |
| Japan | JIS | NCF 825 |
2.Chemical Composition (Nominal, %)
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 38.0 - 46.0 |
| Chromium (Cr) | 19.5 - 23.5 |
| Iron (Fe) | Balance (≥ 22.0) |
| Molybdenum (Mo) | 2.5 - 3.5 |
| Copper (Cu) | 1.5 - 3.0 |
| Titanium (Ti) | 0.6 - 1.2 |
| Carbon (C) | ≤ 0.05 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 0.50 |
| Aluminum (Al) | ≤ 0.20 |
| Sulfur (S) | ≤ 0.03 |
3.Mechanical Properties (Annealed)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 586 MPa (85 ksi) |
| Yield Strength (0.2% offset) | ≥ 241 MPa (35 ksi) |
| Elongation | ≥ 30% |
| Density | 8.14 g/cm³ |
| Melting Point | 1370 - 1400°C |
4.Key Features
- Excellent resistance to both reducing and oxidizing acids, including sulfuric and phosphoric acids
- Outstanding resistance to chloride stress corrosion cracking
- Good resistance to pitting and crevice corrosion in seawater and chloride environments
- Complete international grade equivalence simplifies global sourcing and specification
- Good mechanical properties retained at both room and elevated temperatures
- Stable austenitic microstructure with titanium stabilization against sensitization
- Wire diameter range from 0.1mm to 10.0mm, customized sizes available upon request
5.Typical Applications
- Chemical processing equipment, acid pickling tanks, and heat exchangers
- Pollution control scrubbers and flue gas desulfurization systems
- Oil and gas production, acid gas extraction, and wellhead components
- Marine and seawater cooling systems
- Nuclear fuel reprocessing components
- Phosphoric and sulfuric acid production equipment
- Food processing equipment and evaporators
Why Choose Our Incoloy 825?
We supply Incoloy 825 from a single source with complete international grade traceability across UNS, DIN/W.Nr., EN, BS, AFNOR, GB, and JIS standards. All products are manufactured to strict ASTM B423, ASTM B163, and ASME SB-423 specifications, with mill test certificates (MTC) provided for every shipment. Custom diameters, surface finishes, and packaging configurations are available. Contact us today for technical consultation and competitive pricing.
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