Incoloy | Quickly Understand What are the Main Incoloy Grades / Types.

Overview

Incoloy alloys are mostly nickel-chromium-iron alloys or nickel-iron-chromium alloys. It adds more iron to Inconel. The purpose is to reduce the cost of the alloy. However, Incoloy alloy still has good high temperature corrosion resistance. In this article, we will introduce the different types of Incoloy alloys one by one.

Incoloy Types

Incoloy 800

Incoloy 800 is suitable for use in the condensation condition of F-, Cl- and ammonia acid medium, with good corrosion resistance in H2SO4, HNO3 and its mixed solution. The alloy is also resistance to pressure corrosion and polyethylene corrosion. Incoloy 800 is mainly used in nuclear generators, water heaters, gas coolers, waste steam boilers.

800

Incoloy 800H

The Incoloy 800H is an improved version of the Incoloy 800. It limits the carbon content of the alloy. It has better creep properties than Incoloy 800. The alloy is resistant to corrosion by steam, soft water, steam-air-CO2 mixture, various acid solutions, salts and H2S.

800H

Incoloy 800HT

Incoloy 800HT is an improved version of Incoloy 800H. It further limits the carbon content and aluminum content. In the Incoloy 800 series, its creep performance reaches the extreme.

800HT

Incoloy 825

Incoloy 825 is resistant to oxide stress corrosion and oxidation-reduction composite medium corrosion. It features good resistance to sulfuric acid, phosphoric acid, and also various acid solutions to some extent. Incoloy 825 is commonly used in oil and gas pipelines, oil and steam coolers, nuclear waste disposal equipment, and components used in acid gases.

825

Incoloy 903

Incoloy 903 is a low expansion superalloy. It achieves a very low coefficient of linear expansion through a special ratio of nickel and iron. The addition of cobalt makes it possible to maintain low expansion properties at high temperatures. At the same time, it can obtain high high-temperature strength through precipitation strengthening. It is an indispensable material in aero-engines.

903

Incoloy 907

Incoloy 907 is an improved version of Incoloy 903. It controls the aluminum content to improve the alloy's resistance to oxidation. At the same time it adds more niobium to achieve the effect of precipitation strengthening.

907

Incoloy 908

Incoloy 908 is also a low expansion superalloy. Unlike Incoloy 903, 907 and 909, it does not require the addition of cobalt to increase the low expansion temperature of the alloy.

908

Incoloy 909

Incoloy 909 is a modified version of Incoloy 907. It improves the instantaneous properties of the alloy by increasing the silicon content. At the same time its aging treatment time is much shorter than Incoloy 907.

909

Incoloy 925

Incoloy 925 is a Mo-Cu nickel based alloy containing 19.5-23.50% chromium and 42.0-26.0% nickel. The alloy features excellent hot working and cold working properties.

925

Incoloy 926

Incoloy 926 is a nickel-based alloy containing titanium and aluminum. It contains adequate chromium to form and maintain sufficient scale of chromium oxide to protect it under high temperatures conditions. Incoloy 926 is more resistant to high temperatures than conventional chrome-nickel stainless steel such as 304.

926

Incoloy A-286

Incoloy A-286 is a type of nickel based super alloy with the addition of molybdenum, titanium, aluminum, vanadium and traces of boron to strengthen its comprehensive performance. It features good processing plasticity and satisfactory welding performance. Fe-25Ni-15Cr exhibits high yield strength and persistence performance, creep strength under temperatures below 650 ° C, suitable for fabrication of high-temperature bearing components for aerospace engines operating at temperatures below 650 °C, such as turbine disks, press plates, rotor blades and fasteners.

A-286