What is the difference between incoloy 800 and 825 Alloy?
WHAT IS INCOLOY 800 MATERIAL?
Alloy 800/Incoloy 800 is a low carbon iron-nickel-chromium alloy that has good strength and is resistant to oxidation and carburization at moderate temperatures.
What is the difference between incoloy 800 and 825?
The maximum operating temperature of Incoloy 825 is 540°C, while Incoloy 800 can withstand temperatures up to 1100°C. Therefore, if your project requires flanges that can withstand high temperatures, Incoloy 800 is a better choice.
What is the difference between INCOLOY 800 and 600?
In comparison, Incoloy 800 has a lower nickel content than Inconel 600. The lower nickel content will inevitably lead to a decrease in the corrosion resistance of the material. To reduce this effect, Incoloy 800 adds more chromium to improve the material's oxidation resistance.
What is the difference between INCOLOY 800 and 800 alloys?
Incoloy 800 is primarily used in applications up to 1100°F, while 800H and 800HT alloys are typically used in applications above 1100°F that require creep and rupture resistance.
Incoloy 800 vs 825 Alloy – What's the Difference?
The choice between Incoloy 800 and Inconel 825 alloys depends on a variety of factors, including chemical composition, mechanical properties, and cost. Below, we will analyze their main differences:
Chemical Composition: Incoloy 800 vs 825 Alloy
| Element | Incoloy 800 | Incoloy 825 |
|---|---|---|
| Ni | 30–35% | 38–46% |
| Cr | 19–23% | 19.5–23.5% |
| Fe | Balance | Balance |
| Mo | – | 2.5–3.5% |
| Cu | – | 1.5–3% |
| Ti | ≤ 0.6% | 0.6–1.2% |
| C | ≤ 0.10% | ≤ 0.05% |
| Si | ≤ 1.0% | ≤ 0.5% |
| Mn | ≤ 1.5% | ≤ 1.0% |
Mechanical Behavior: Incoloy 800 vs 825 Alloy
| Property | Incoloy 800 | Incoloy 825 |
|---|---|---|
| Tensile Strength | ≥ 450 MPa | ≥ 550 MPa |
| Yield Strength | ≥ 170 MPa | ≥ 220 MPa |
| Elongation | ≥ 30% | ≥ 30% |
| Hardness (Rockwell) | B85–B90 | B88–B93 |
Physical Properties: Incoloy 800 vs 825 Alloy
| Property | Incoloy 800 | Incoloy 825 |
|---|---|---|
| Density | 7.94 g/cm³ | 7.94 g/cm³ |
| Melting Range | 1357–1385°C | 1370–1400°C |
| Thermal Conductivity | 11.2 W/m·K (at 100°C) | 11.1 W/m·K (at 100°C) |
| Specific Heat Capacity | ~502 J/kg·K | ~460 J/kg·K |
| Electrical Resistivity | 0.98 μΩ·m | 1.03 μΩ·m |
Applications
Incoloy 800: For high temperature industrial applications such as heat exchangers and furnace components.
Incoloy 825: For chemical processing, pollution control, and environments where acid resistance is critical.
Heat Resistance
Incoloy 800 is designed for high temperature applications and can withstand temperatures up to 1100°C. Incoloy 825 can withstand high temperatures but is more known for its corrosion resistance.
Corrosion Resistance
Because Incoloy 825 contains molybdenum and copper, it performs better than Incoloy 800 in environments containing reducing agents such as sulfuric and phosphoric acids.
Which is Better? Incoloy 800 vs 825 Alloy
The choice between Incoloy 800 and 825 depends on your application needs:
For high temperature, structural integrity-critical applications, choose Incoloy 800.
In environments with corrosive media, especially acidic media, choose Incoloy 825.
In Conclusion:
Incoloy 800 and 825 each have unique benefits that meet specific industrial needs. Understanding their differences in chemical composition, mechanical properties, and corrosion resistance is critical to making an informed decision. Whether you need high-temperature durability or strong corrosion resistance, Gnee Steel offers a wide variety of Incoloy products to meet your needs. Contact us today for pricing and expert guidance!
