Incoloy 825 Round Bar (UNS N08825 / W.Nr. 2.4858)
Incoloy 825 Round Bar is a nickel–iron–chromium alloy with additions of molybdenum and copper, engineered for excellent resistance to general corrosion, pitting, crevice corrosion, and stress corrosion cracking. It performs exceptionally well in both oxidizing and reducing environments, making it a preferred material for chemical processing, oil & gas, and pollution control applications.
Key Features
- Excellent resistance to sulfuric and phosphoric acids
- Outstanding resistance to stress corrosion cracking
- Good protection against pitting and crevice corrosion
- Stable austenitic structure across wide temperature ranges
- Good weldability and fabrication characteristics
- Reliable performance in harsh chemical environments
Equivalent Grades
| Standard | Equivalent |
|---|---|
| UNS | N08825 |
| DIN / EN | 2.4858 |
| ASTM | Incoloy 825 |
Sizes
- Diameter: 6 mm to 350 mm
- Length: Random, Cut Length, or as per customer requirement
Incoloy 825 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | 38.0 – 46.0 |
| Chromium (Cr) | 19.5 – 23.5 |
| Iron (Fe) | ≥ 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) | ≤ 1.0 |
| Silicon (Si) | ≤ 0.5 |
UNS N08825 Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 550 MPa |
| Yield Strength (0.2%) | ≥ 240 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 90 HRB |
W.Nr. 2.4858 Physical Properties
| Property | Value |
|---|---|
| Density | 8.14 g/cm³ |
| Melting Range | 1370 – 1400 °C |
| Modulus of Elasticity | 195 GPa |
| Thermal Conductivity | 11.1 W/m·K |
Types of Incoloy 825 Round Bar
- Hot Rolled Round Bar
- Cold Drawn Round Bar
- Forged Round Bar
- Precision Machined Bar
Applications
- Chemical processing equipment
- Oil & gas and offshore systems
- Acid production and pickling plants
- Heat exchangers and condensers
- Pollution control equipment
- Nuclear fuel reprocessing systems
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