Incoloy 825
Gnee specializes in the production of Incoloy 825 plates, bars, tubes, wires and forgings. Our Incoloy Alloy grades are rich and can be hot-worked, cold-worked, annealed, welded and other process treatments according to customer needs.
| Delivery Time | 30-50 days, 7 days for stock goods |
|---|---|
| Loading Port | Shanghai, Tianjin, Qingdao |
| Payment method and term | Wire transfer and letter of credit |
| Supply Ability | Up to 800 tons per month |
| Customization | Supports custom sizes, cutting, welding, and surface treatment |
Description
Incoloy 825 is a nickel-iron-chromium alloy with significant additions of molybdenum and copper, designed for exceptional resistance to both reducing and oxidizing environments. It excels in handling sulfuric and phosphoric acids, making it a go-to material for chemical processing equipment like acid tanks and heat exchangers.
Compared to stainless steels, Incoloy 825 offers superior resistance to chloride-induced stress corrosion cracking and pitting, ensuring reliability in marine applications and offshore oil rigs. Its high-temperature strength, up to 540°C (1000°F), combined with excellent weldability, makes it ideal for demanding conditions such as power plant condensers and nuclear fuel reprocessing systems.
With a minimum tensile strength of 585 MPa and corrosion resistance verified by ASTM B424 standards, Incoloy 825 delivers long-lasting performance in the harshest industrial environments.
Incoloy alloy 825 Product Parameters
| Parameter | Details |
| Material | Incoloy 825 |
| Standard | ASTM B424, ASTM B425, ASTM B564 |
| Forms | Plate, Sheet, Coil, Bar, Pipe, Tube, Wire |
| Size Range | Plate: Thickness 3-150mm; Pipe: 1/8″-48″ |
| Manufacturing Process | Hot Rolled, Cold Rolled, Extruded, Forged |
| Density | 8.14 g/cm³ |
| Melting Point | 1370-1400°C |
| Tensile Strength | ≥ 550 MPa |
| Yield Strength | ≥ 220 MPa |
| Elongation | ≥ 30% |
| Corrosion Resistance | Excellent resistance to acids, alkalis, and seawater |
| Applications | Chemical processing, pollution control, marine environments |
Incoloy Alloy 825 International Standard Comparison Chart
| Standard | ASTM | ASME |
| Material | UNS | N08825 |
| Round Bars | B425 | SB425 |
| Plates/Sheets | B424 | SB424 |
| Seamless Pipe/Tube | B423 | SB423 |
| Welded Pipe/Tube | B163/704/705 | SB163 |
UNS N08825 Equivalent grades
| UNS | W. Nr. | BS | AFNOR | EN |
| N08825 | 2.4858 | NA16 | NC21FeDu | NiCr21Mo |
Features and Advantages
- Excellent Corrosion Resistance: Provides exceptional resistance to sulfuric and phosphoric acids, making it ideal for chemical processing.
- Stress Corrosion Cracking Resistance: Superior performance in high-stress and chloride-rich environments, ensuring reliability in marine and oil industries.
- High Strength and Durability: Withstands high-pressure and high-temperature conditions, reducing material failure risks.
- Resistance to Pitting and Crevice Corrosion: Suitable for use in aggressive environments such as seawater and brine systems.
- Weldability: Easily welded using standard techniques, facilitating fabrication and installation.
Parameter Information
Chemical Parameters
| Element | Composition (%) |
| Nickel (Ni) | 38.0-46.0 |
| Chromium (Cr) | 19.5-23.5 |
| Iron (Fe) | Balance |
| Molybdenum (Mo) | 2.5-3.5 |
| Copper (Cu) | 1.5-3.0 |
| Titanium (Ti) | 0.6-1.2 |
| Manganese (Mn) | ≤1.0 |
| Silicon (Si) | ≤0.5 |
| Carbon (C) | ≤0.05 |
| Sulfur (S) | ≤0.03 |
| Phosphorus (P) | ≤0.03 |
Mechanical Properties
| Property | Value |
| Tensile Strength | ≥550 MPa |
| Yield Strength (0.2% offset) | ≥220 MPa |
| Elongation | ≥30% |
| Hardness | 160-190 HB |
Physical Property
| Property | Value |
| Density | 8.14 g/cm³ |
| Melting Range | 1370-1400 °C |
| Specific Heat Capacity | 460 J/kg·K (at 20 °C) |
| Thermal Conductivity | 11.2 W/m·K (at 20 °C) |
| Electrical Resistivity | 1.03 µΩ·m (at 20 °C) |
| Coefficient of Thermal Expansion | 14.1 µm/m·°C (20-1000 °C) |
Incoloy 825 Tensile Properties
| Form | Condition | 0.2% Proof Stress (MPa) | Tensile Strength (MPa) | Elong (%) |
| Tube | Annealed | 440 | 770 | 35 |
| Tube | Cold drawn | 880 | 1000 | 15 |
| Bar | Annealed | 325 | 690 | 45 |
| Plate | Annealed | 340 | 660 | 45 |
| Sheet | Annealed | 420 | 760 | 39 |
alloy 825 Welding Consumables
| Normal Service | Higher Strength | Best Corrosion Resistance | |
| Welding electrode | Inconel WE 112 | Inconel WE 112 | Inconel WE 112 |
| Filler metal | Inconel FM 625 | Inconel FM 625 | Inconel FM 625 |
| Flux cored wire | Inco Cored 625DH | Inco Cored 625DH | Inco Cored 625DH |
A guide to welding consumables to be used with Incoloy Alloy 825 under various conditions
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