Incoloy 825 Alloy (UNS N08825) – Sheets, Plates, Bars, Pipes, Coils, Strips, Wires
Corrosion Resistant Nickel-Iron-Chromium Alloy Supplier & Manufacturer
Incoloy 825 alloy (UNS N08825) is a high-performance nickel-iron-chromium alloy designed to provide superior corrosion resistance in corrosive environments. Through careful formulation with the addition of molybdenum, copper, and titanium, Incoloy Alloy 825 performs exceptionally well in acidic, chloride-containing, and high-temperature conditions.
Huaxiao Metal supplies Incoloy 825 plates, sheets, tubes, bars, wires, and custom-machined components to the global chemical, oil and gas, shipbuilding, nuclear power, and pollution control industries.
👉 Contact us today to get the latest Incoloy 825 price, stock availability, and technical support.
👉 Explore our full Incoloy alloy products to compare different grades for your project.
Incoloy 825 Product Forms We Supply
We supply Incoloy Alloy 825 in a wide range of product forms for different engineering needs:
Incoloy 825 Plates & Sheets
- Incoloy 825 Coils & Strips
Incoloy 825 Pipes & Tubes (Seamless & Welded)
Incoloy 825 Bars & Rods
Incoloy 825 Wire & Wire Mesh
Forged Parts, Flanges & Custom Machined Components
📌 Custom sizes, cut-to-length, and project-based supply available.
Technical Specifications
What is Incoloy 825 Alloy Steel?
Incoloy 825 is a nickel-based alloy developed to resist both oxidizing and reducing corrosion environments. Unlike conventional stainless steels, this alloy maintains its corrosion resistance even in sulfuric acid, phosphoric acid, nitric acid mixtures, and seawater exposure.
From an engineering and procurement perspective, Incoloy 825 is widely selected when:
Stainless steels (304 / 316L) fail due to stress corrosion cracking
Higher-nickel alloys (Inconel 625, Hastelloy C276) are technically excessive or cost-inefficient
Long-term operational reliability is critical
This makes Incoloy Alloy 825 a cost-effective corrosion-resistant alloy for medium-to-severe service conditions.
Corrosion Resistance:
Incoloy alloy 825’s corrosion resistance is one of its greatest advantages:
✔ Resistant to strong acids such as sulfuric acid and phosphoric acid;
✔ Resistant to oxidizing environments (such as nitric acid and oxidizing salts);
✔ Excellent resistance to stress corrosion cracking and pitting corrosion;
✔ Performance in high chloride environments is far superior to most stainless steel alloys.
Fabrication & Machining:
Excellent welding and forming
Machining requires standard industrial tooling
Custom dimensions available
Chemical Composition of Incoloy 825 (UNS N08825)
Incoloy 825 is an alloy from the UNS N08825 series, primarily composed of high proportions of nickel (Ni), chromium (Cr), iron (Fe), molybdenum (Mo), copper (Cu), and titanium (Ti). The synergistic effect of these elements results in its extremely high corrosion resistance.
| Element | Typical Range (%) |
|---|---|
| Nickel (Ni) | 38–46 |
| Iron (Fe) | 30–35 |
| Chromium (Cr) | 19.5–23.5 |
| Molybdenum (Mo) | 2.5–3.5 |
| Copper (Cu) | 1.5–3.0 |
| Titanium (Ti) | 0.6 max |
| Carbon (C) | 0.05 max |
- ✔ Nickel improves resistance to chloride stress corrosion cracking;
- ✔ Chromium provides oxidation resistance;
- ✔ Molybdenum and copper enhance corrosion resistance in reducing acid environments.
Mechanical Properties:
Incoloy Alloy 825 maintains excellent strength and ductility in the range of room temperature to medium and high temperature, and retains good tensile strength and impact resistance even at temperatures up to around 500°C.
| Property | Value |
|---|---|
| Tensile Strength | 485–690 MPa |
| Yield Strength | 170–310 MPa |
| Elongation | 30–40% |
| Hardness | 150–190 HB |
| Max Service Temperature | 980°C |
Incoloy Alloy 825 Equivalent Grades
Incoloy Alloy 825 (UNS N08825) is recognized globally under multiple international standards.
The table below shows the most commonly used Incoloy 825 equivalent grades across ASTM, EN, DIN, ISO, JIS, GB, and other systems.
| Standard System | Equivalent Grade | Notes |
|---|---|---|
| UNS | N08825 | Official UNS designation for Incoloy Alloy 825 |
| Werkstoff (DIN / EN) | 2.4858 | German material number for Alloy 825 |
| ASTM / ASME | ASTM B425 / B564 / B163 | Specifications for bars, forgings, and tubes |
| ISO | ISO 9723 / ISO 6208 (related forms) | ISO standards covering nickel alloys, including 825 |
| BS (British Standard) | NA16 | British designation equivalent to Alloy 825 |
| AFNOR (France) | NCF 825 | French equivalent grade |
| JIS (Japan) | NCF 825 (commonly referenced) | Japanese industrial reference |
| GB (China) | NS142 / GH3625 (industry reference) | Common Chinese equivalence references |
| NACE | MR0175 / ISO 15156 | Approved for sour service environments |
| Trade Name | Incoloy Alloy 825 | Registered trade name (Special Metals) |
When sourcing Incoloy 825 materials internationally, confirming the equivalent grade and standard is essential to ensure material compatibility and compliance.
Typical Applications of Incoloy 825 Alloy
Chemical Processing Industry
Used in reactors, heat exchangers, storage tanks, and piping systems exposed to corrosive acids.
Oil & Gas Industry
Applied in tubing, valves, pumps, and downhole components under sour and chloride-rich environments.
Marine & Offshore Engineering
Ideal for seawater cooling systems, marine piping, and offshore platform equipment.
Nuclear Power & Energy
Used in nuclear fuel reprocessing equipment and pollution control systems.
Environmental & Pollution Control
Applied in flue gas desulfurization (FGD) units and waste treatment systems.
Incoloy Alloy 825 vs Other Corrosion-Resistant Alloys
| Alloy | UNS No. | Key Alloying Elements | Corrosion Resistance | High-Temperature Strength | Typical Applications | Cost Level |
|---|---|---|---|---|---|---|
| Incoloy 800 / 800H / 800HT | N08800 / N08810 / N08811 | Ni-Fe-Cr | Moderate | Excellent | Heat exchangers, furnaces, petrochemical heaters | Medium |
| Incoloy 825 | N08825 | Ni-Fe-Cr-Mo-Cu-Ti | High (Acid & Chloride) | Good | Chemical processing, oil & gas, marine, pollution control | Medium-High |
| Inconel 625 | N06625 | Ni-Cr-Mo-Nb | Very High | Very High | Extreme corrosion & high stress environments | High |
| Hastelloy C276 | N10276 | Ni-Cr-Mo-W | Excellent | High | Severe acid & reducing environments | Very High |
| 316L Stainless Steel | S31603 | Fe-Cr-Ni-Mo | Moderate | Moderate | Mild corrosion environments | Low |
Why Choose Huaxiao Metal as Your Incoloy 825 Supplier?
Stock availability and fast delivery: Sheets, plates, strips, bars, wires, pipes in stock
Mill Test Certificates (EN 10204 3.1) and third-party inspection
Technical support for alloy selection and custom sizes
Global Export & Experience: Serving EU, South American, Middle East, and Asian markets
Custom Processing: Cutting, bending, forging, and heat treatment services
By choosing Huaxiao Metal, you ensure fast delivery, competitive pricing, and high-quality Incoloy Alloy 825 products.
FAQ
Is Incoloy 825 suitable for sulfuric acid service?
Yes. Incoloy 825 offers excellent resistance to sulfuric acid across a wide concentration range.
Can Incoloy Alloy 825 replace Inconel 625?
In many medium-severity environments, yes — with significantly lower cost.
Do you provide certificates and inspection reports?
Yes. EN 10204 3.1, PMI, and third-party inspection are available.
What is the delivery time for Incoloy Alloy 825 products?
Stock items ship quickly; custom orders depend on specification and quantity.
Get the Latest Incoloy 825 Price & Technical Support
If you are looking for a reliable Incoloy 825 alloy supplier, Huaxiao Metal is ready to support your project.
Contact us today to request a quote for Incoloy 825 Alloy in your required form. Our team will provide a fast, competitive, and tailored offer.