Incoloy 825 alloy has similar grades in different countries and regions, as follows:
-USA: Incoloy 825, UNS N08825
-China: NS142
Europe: 2.4858
-Japan: NCF 825
Incoloy 825
Incoloy 825 Alloy Properties
Incoloy 825 is a nickel-iron-chromium alloy with excellent corrosion resistance and oxidation resistance, and is especially suitable for acid-and alkali-resistant environments. The alloy is widely used in chemical, petroleum and pollution control equipment.
Ingredients
|
element |
Content (%) |
|
Nickel (Ni) |
38.0-46.0 |
|
Chromium (Cr) |
19.5-23.5 |
|
Iron (Fe) |
margin |
|
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 |
|
Phosphorus (P) |
≤ 0.03 |
|
Sulfur (S) |
≤ 0.03 |
Physical Properties
|
performance index |
value |
|
density |
8.14 g/cm³ |
|
melting point |
1350-1400°C |
|
Coefficient of thermal expansion (20-1000°C) |
13.5 x 10⁻⁶ /°C |
|
thermal conductivity |
10.8 W/(m·K) |
|
modulus of elasticity |
200 GPa |
heat treatment
|
Processing Steps |
Description |
|
solution treatment |
is heated at 940-980°C and then rapidly cooled to maintain the corrosion resistance of the alloy. |
machining and welding
·Cold working: suitable for cold drawing and cold rolling, which can increase strength.
·Hot processing: should be carried out between 870-1200°C.
·welding: suitable for TIG and MIG welding, no special heat treatment after welding.
Application
·Chemical equipment: suitable for heat exchangers and reactors in acid-base corrosive environments.
·Petroleum industry: used in oil refining equipment and natural gas processing.
·Pollution Control: Used in wastewater treatment and flue gas desulfurization systems.
·food industry: suitable for processing equipment with highly corrosive media.
Incoloy 825 alloys are available in different shapes and sizes, including plates, bars, wires and forgings.
