Incoloy 825 Sheet: When Standard Stainless Steel Is No Longer Enough
In field applications, engineers usually opt for 304, 316L or 904L stainless steel at the initial stage. Yet in acidic surroundings or areas with high chloride levels, these common steels tend to suffer from pitting, crevice corrosion and stress corrosion cracking. Once these issues appear, material replacement is the only practical solution.
In such cases, Incoloy 825 sheet is always a top pick.
UNS N08825 (Alloy 825) is a nickel-iron-chromium alloy. It's widely used in scenarios where corrosion resistance is the key requirement, even if the material costs a bit more. It delivers strong protection against sulfuric acid, phosphoric acid, chloride damage and reducing environments.
For most purchasers, the switch to Incoloy 825 sheet is driven by practical costs: constant maintenance and repairs will eventually burn a bigger budget than changing to this high-performance alloy.
Product Specifications & Technical Data
| Item | Details |
| Material Grade | Incoloy 825 / Alloy 825 |
| Standard | ASTM B424 / ASME SB424 |
| Thickness Range | 0.3 mm – 80 mm |
| Width | Up to 2500 mm |
| Surface | No.1 / 2B / BA / Pickled |
| Manufacturing | Hot Rolled / Cold Rolled |
| Payment Terms |
T/T: 30% deposit upon order confirmation, 70% balance against copy of Bill of Lading (B/L) L/C: Irrevocable sight L/C (for orders ≥ USD 50,000) Special terms: Western Union for small sample orders; D/P at sight for long-term cooperative clients |
| Packing |
Inner: Anti-rust paper + waterproof film Outer: Fumigated wooden pallets/cases for seaworthy transportMarked with grade, size, weight and heat number on each package |
| Delivery Time |
7–10 working days for standard stock items 15–20 working days for customized sizes and bulk orders |
Chemical Composition (Typical %)
| Element | Nickel (Ni) | Chromium (Cr) | Iron (Fe) | Molybdenum (Mo) | Copper (Cu) | Titanium (Ti) |
| Content | 38.0 – 46.0 | 19.5 – 23.5 | ≥22 | 2.5 – 3.5 | 1.5 – 3.0 | 0.6 – 1.2 |
Mechanical Properties (Typical)
| Property | Value |
| Tensile Strength | ≥585 MPa |
| Yield Strength | ≥240 MPa |
| Elongation | ≥30% |
| Melting Range | 1370–1400°C |
Typical Applications of Incoloy 825 Sheet
Typical applications include:
- Chemical processing equipment
- Acid storage tanks
- Pickling equipment
- Heat exchangers
- Marine and offshore equipment
- Oil & gas systems
- Pollution control equipment
- Flue gas desulfurization systems (FGD)
- Nuclear fuel reprocessing
For many projects, the material is chosen because downtime caused by corrosion costs more than upgrading to a higher alloy grade.
Why Buyers Source Inconel 825 Sheet From Us
Thickness Accuracy
We guarantee high thickness accuracy for all sheets. Every piece is measured precisely to meet your dimensional requirements.
Export-Safe Packaging
Our steel sheets are packed in fumigated wooden cases for export. Inner anti-rust and waterproof materials are used to ensure safe delivery overseas.
Custom Cut Sizes
We offer custom cut sizes for all steel sheets, including precise cutting to your exact length, width, and shape requirements.
Whether you need small pieces for prototyping or large batches for production, we can deliver tailored dimensions with tight tolerance control.
Performance Characteristics
Chloride Stress Corrosion Cracking (SCC)
Most standard stainless steels struggle when chloride levels and operating temperatures rise, and they're prone to cracking under these conditions.
Alloy 825 has a high nickel content, ranging from 38% to 46%. Combined with molybdenum and copper additives, it holds up far better in environments with high chloride content.
Acid Corrosion Resistance
If your equipment runs in mixed acid environments, Incoloy 825 is always a solid option.
Copper enhances its ability to resist sulfuric acid, and molybdenum guards against local corrosion.
We see this alloy used a lot in acid pickling systems, chemical tanks, fertilizer and phosphoric acid production lines. Users mainly choose it for its outstanding stability in these tough working conditions.
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