Incoloy 800HT alloy has corresponding similar grades in different countries and regions, as shown below:
-USA: Incoloy 800HT, UNS N08811
-China: GH32
Europe: 1.4959
-Japan: NCF 800HT
Incoloy 800HT
Incoloy 800HT Alloy Properties
Incoloy 800HT is a nickel-iron-chromium alloy with excellent high temperature strength and oxidation resistance, especially suitable for parts working at high temperatures. The alloy is widely used in petrochemical, nuclear power and heat treatment industry.
Ingredients
|
element |
Content (%) |
|
Nickel (Ni) |
30.0-35.0 |
|
Chromium (Cr) |
19.0-23.0 |
|
Iron (Fe) |
margin |
|
carbon (C) |
0.05-0.1 |
|
Manganese (Mn) |
≤ 1.5 |
|
Silicon (Si) |
≤ 1.0 |
|
Copper (Cu) |
≤ 0.75 |
|
Titanium (Ti) |
0.15-0.6 |
|
Aluminum (Al) |
0.15-0.6 |
|
Phosphorus (P) |
≤ 0.03 |
|
Sulfur (S) |
≤ 0.015 |
physical properties
|
performance index |
value |
|
density |
7.94 g/cm³ |
|
melting point |
1357-1385°C |
|
Coefficient of thermal expansion (20-1000°C) |
13.3 x 10⁻⁶ /°C |
|
thermal conductivity |
11.2 W/(m·K) |
|
modulus of elasticity |
200 GPa |
heat treatment
|
Processing Steps |
Description |
|
solution treatment |
is heated below 1150°C and then rapidly cooled to improve the high temperature strength and oxidation resistance of the alloy. |
machining and welding
·Cold working: suitable for cold drawing and cold rolling, which can increase strength.
·Hot processing: It should be carried out between 950-1200°C.
·welding: suitable for TIG and MIG welding, no special heat treatment after welding.
Application
·Petrochemical industry: used in high temperature fractionation tower, heater and cracking furnace.
·heat treatment equipment: suitable for high temperature furnace lining and crucible.
·nuclear power industry: structural components used in reactors.
·air pollution control: used for waste gas treatment equipment.
Incoloy 800HT alloy is available in different shapes and sizes, including plates, bars, wires and forgings.
