GH4099 (GH99) is a highly alloyed nickel-based aging sheet alloy, which is comprehensively strengthened with cobalt, tungsten, aluminum, titanium and other elements to make the alloy have high thermal strength. It can be used for a long time under 900°C, and the highest work The temperature can reach 1000°C.
The alloy is stable in structure, and has satisfactory performance in cold and hot forming and welding processes. It is suitable for the manufacture of high-temperature plate load-bearing structural parts such as aero engine combustion chambers and afterburners. Large-scale plate structural parts made of this alloy can be used After solution treatment, it can be used directly without aging treatment. The main products are plates and wires, and plates and forgings can also be produced.


Similar Grades:
ЭП693, ХН68МВКТЮР (Russia)

Chemical Composition %

    C              Cr             Ni              W               Mo               Al                Co                Ti
≤0.08   17.00~20.0    margin   5.00~7.00   3.50~4.50   1.70~2.40    5.00~8.00    1.00~1.50

   Fe          B            Mg          Ce         Mn         Si          P           S
≤2.00    ≤0.005    ≤0.010    ≤0.020    ≤0.40    ≤0.50   ≤0.015   ≤0.015


Physical properties:
Density: 8.47g/cm3
Melting temperature range: 1345~1390ºC