Incoloy 825 Plate (UNS N08825 / W.Nr. 2.4858)
High-strength corrosion-resistant alloy plates for chemical processing and pollution control system
SEATHER TECHNOLOGY supplies Incoloy 825 plates (UNS N08825) — a nickel-iron-chromium alloy engineered for excellent corrosion resistance, high-temperature strength, and superior processability. Through its precisely balanced chemical composition, Incoloy 825 demonstrates outstanding resistance to oxidizing and reducing acids, as well as chloride-induced stress corrosion cracking, making it ideal for use in harsh chemical and marine environments.
Incoloy 825 plate maintains excellent mechanical properties and long-term durability even under extreme temperature and pressure conditions. It is widely used in the fabrication of heat exchangers, reactors, condensers, evaporators, and piping systems in the chemical, petrochemical, and energy industries.
As a professional nickel alloy supplier, SEATHER TECHNOLOGY offers high-quality Incoloy 825 plates that can be precision-cut to meet your exact dimensional and design requirements. Whether for small-batch customization or large-scale production, our laser, water jet, and plasma cutting services ensure high efficiency, accuracy, and cost-effectiveness, helping you streamline your processing operations.
By choosing SEATHER Incoloy 825 plates, you gain not only a reliable, high-performance material, but also flexible, professional processing support — providing a dependable foundation for your critical engineering applications.
Incoloy 825 Plate (UNS N08825) Specifications & Srtandard
- Thickness Range: 2.5mm ~ 50mm (For thickness < 2.5mm, please refer to Incoloy 825 nickel alloy sheet)
- Width Range: 50mm ~ 2000mm
- Length: 100mm ~ 6000mm
- Customized size needs to be confirmed with our team
- Grades: 825 / UNS N08825 / W.Nr. 2.4858
- Standards: ASTM B424
ASTM B906
ASME SB 424
ASME SB 906
BS 3072NA16
BS 3073NA16
DIN 17750
VdTÜV 432
ISO 6208 - Delivery State: Hot Rolled
- Finish: No.1, 1D, Pickled or as per demand
- Brand: SEATHER TECHNOLOGY, Special Metals(SMC), HAYNES International, VDM Metals, ATI, etc.
Incoloy 825 Plate (UNS N08825) Applications & Usages
Incoloy 825 alloy can be used in a variety of applications including:
- Fuel element dissolvers
- Sea-water-cooled heat exchangers; offshore product piping systems; tubes and components in sour gas service
- Heat exchangers, evaporators, scrubbers, dip pipes etc.
- Air-cooled heat exchangers in petroleum refineries
- Chemical Processing
- Food Processing
Incoloy 825 Plate (UNS N08825) Drawing & Formula
Formula: m = W (m) × THK (mm) × L (m) × ρ (g/cm³)
W = Width, THK = Thickness, L = Length, ρ = Density
What is Incoloy 825 Alloy
Alloy 825 also referred to as the UNS N08825/W.Nr. 2.4858 alloy.
It is a nickel-iron-chromium alloy with additions of molybdenum, copper and titanium.
The alloy’s chemical composition is designed to provide exceptional resistance to many corrosive environments.
Typical applications for alloy 825 products are chemical processing, pollution control, oil and gas recovery, acid production, pickling operations, nuclear fuel reprocessing, and handling of radioactive wastes.
Incoloy 825 Plate (UNS N08825) Chemical Composition
| Incoloy 825 Alloy Chemical Composition(%) | ||||||||||
| Ni | Fe | Cr | Mo | Cu | Ti | C | Mn | S | Si | Al |
| 38.0-46.0 | 22.0 min | 19.5-23.5 | 2.5-3.5 | 1.5-3.0 | 0.6-1.2 | 0.05 max | 1.0 max | 0.03 max | 0.5 max | 0.2 max |
Incoloy 825 Plate (UNS N08825) Mechanical Properties
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.14 g/cm3 | 1400 °C (2550 °F) | 690-1000Mpa | 330-880Mpa | 45% – 15% |
Incoloy 825 Plate (UNS N08825) Physical Properties
| Melting Range | Specific Heat, 20°C (J/(g.K)) | Magnetic Permeability (20°C) | Thermal Conductivity, 20°C (W/(m.K)) | Curie Temperature (°C) |
| 1400 °C (2550 °F) | 440 | <1.005 | 10.8 | -196 |

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More Information About Incoloy 825 Plate (UNS N08825)
When you choose to buy Incoloy 825 Plate (UNS N08825), there have some important points we need to know before we get started.
Pitting resistance equivalency numbers (PREN) for Incoloy 825
Incoloy 825 PREN: 31.4
The pitting resistance equivalency number uses the alloy’s chemical makeup to guess its power against pitting corrosion. You check how much chromium, molybdenum, tungsten, and nitrogen are in the alloy. These elements help keep the steel safe. The most used formula is:
PREN = CR% + 3.3 x (MO% + 0.5 x W%) + 16 x N% How to Purchase Incoloy 825 Plate
When purchasing plates, it’s essential to have the right materials and information to ensure a smooth procurement process and to get the products that meet your needs.
Here’s what you need to provide:
1. Material: Specify the grade material, Incoloy Alloy 825
2. Size: Specify the plate’s thickness, width, length
3. Quantity: Provide the exact number of plates required for an accurate quotation.
4. Technical specifications: Include technical specifications and drawings. If there are unique design requirements, detailed drawings can be attached.
5. Quality standards: Specify quality standards and inspection requirements, such as the need for third-party inspection, material certification, and inspection reports.
6. Special requirements: Specify any special surface treatment, polishing, corrosion resistance requirements, etc.
7. Packaging requirements: If there are specific packaging needs, such as protective or anti-corrosion packaging, please specify.
8. Delivery time: Specify the expected delivery time and location.
By preparing the above information, you can streamline the process of purchasing plates and ensure that you receive high-quality products that meet your requirements.
Conclusion
We have introduced our products briefly. If you want to know more about it, you can check the article here Inconel Alloy 825: Composition, Properties and Applications.
If you need to purchase alloy plates, please get in touch with us immediately.
Trademark Notices:
Inconel®, Incoloy®, and Monel® are registered trademarks of Special Metals Corporation.
Hastelloy® is a registered trademark name of Haynes International, Inc.
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