Grade GH2038
China ISC H20380
Old grade GH38A
Corresponds to standard GB T 14992-2005
Classification and grades of superalloys and intermetallic high-temperature materials.
Other grades: GH2038, H20380, GH38A
Classified as Special alloy steel.
Performance: High temperature strength, easy machinability, weldability.
Tags: age-hardening iron-based superalloys.
Note Characteristics and uses: GH2038 is a Fe-Ni-Cr-based precipitation-hardening deformed superalloy with a service temperature of less than 700 °C. Elements such as aluminum and titanium are added to the alloy to form a precipitation-strengthening phase, and boron is added to purify and strengthen the grain boundaries. The alloy is used below 700 to have high thermal strength, as well as good cutting performance and welding performance. GH2038 superalloy is mainly used for hot end components such as turbine discs, combustion chamber housing parts, turbine housings, supports, shafts and blades used below 700. GH2038 superalloy has a flake L**es phase precipitation at the grain boundary after heat treatment.
It can be used to make fasteners such as nuts.
This standard is applicable to deformed superalloys, cast superalloys (equiaxed crystalline casting superalloys, directionally solidified column-crystal superalloys and single-crystal superalloys), superalloy wires for welding, powder metallurgy superalloys, dispersion-strengthened superalloys and intermetallic compound superalloys.
GH2038 Chemical element composition content (%)
Composition c si mn p s cr ni ti b al more.
Minimum - 10 18 23 - Fe: Margin.
The maximum value is 01 1 1 0.03 0.02 12.5 21 2.8 0.008 0.5
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