GH4043 is a solid solution-strengthening nickel-based superalloy with basically the same properties and uses as the corresponding solid-solution-strengthening iron-based alloys and age-hardening iron-based alloys. The difference is in the base body.
The base metal of iron-based superalloy is iron (about 50% iron content) and about 10% chromium content. 23%, and the nickel content is about 7% to 40%; while the base metal of nickel-based superalloy is nickel, and the nickel content is greater than 50%.
Due to the increase in nickel content, the thermal strength of nickel-based superalloy is higher than that of iron-based superalloy. , the maximum working temperature has reached about 1050 ºC; but its machinability also deteriorates.
At the same time, because they all contain a large amount of nickel, which is not in line with the resource situation in my country, iron-based superalloys should be gradually replaced.
Grade : GH4043
C(%): ≤0.12
Cr(%): 15.0~19.0
Mo(%): 4.00~6.00
Ni(%): Margin
W(%): 2.00~3.50
Al(%): 1.00~1.70
Nb(%): 0.50~1.30
Ti(%): 1.90~2.80
Fe(%): ≤5.0
Si(%)≤: 0.60
Mn(%)≤: 0.50
P(%): 0.015
S(%): 0.010
Others (%): B≤0.01, Ce≤0.03, Co14.0~16.0
Application range of GH4043: Turbine blades below 700ºC and turbine disks below 750ºC
Mechanical properties of GH4043 (GH43) superalloy:
1. GH4043 (GH43) alloy yield strength (σ0.2) (Mpa): ≥630
2. GH4043 (GH43) alloy tensile strength σb (MPa): ,≥700
3. GH4043 (GH43) alloy elongation (δ5)%: ≥6 Section shrinkage (ψ)%: ≥10
4. GH4043 (GH43) alloy hardness (HBS): 3.3-3.70
GH4043 (GH43) superalloy properties and uses:
GH4043 is a nickel-based aging alloy. Its various properties are close to those of GH4037 alloy, and its notch sensitivity is higher, so its application range is smaller than that of GH4043. It is used for gas turbine blades with working temperature of 800-850ºC.
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