About the Composition and Properties of GH4145 High Temperature Alloy

GH4145 high-temperature alloy has good corrosion resistance and oxidation resistance below 980 ℃, high strength below 800 ℃, good relaxation resistance below 540 ℃, as well as good formability and welding performance.

The chemical composition of GH4145 high-temperature alloy mainly includes elements such as nickel, chromium, iron, niobium, cobalt, carbon, manganese, silicon, sulfur, copper, aluminum, titanium, etc. Specifically, the chemical composition range of gh4145 high-temperature alloy is as follows: nickel (Ni): ≥ 70.0, chromium (Cr): 14.0-17.0, iron (Fe): 5.00-9.00, niobium (Nb): 0.70-1.20, cobalt (Co): ≤ 1.00, carbon (C): ≤ 0.08, manganese (Mn): ≤ 1.00, Silicon (Si): ≤ 0.50, sulfur (S): ≤ 0.010, copper (Cu): ≤ 0.50, aluminum (Al): 0.40-1.00, titanium (Ti): 2.25-2.75.

The physical properties of GH4145 high-temperature alloy include

The density is 8.28g/cm3

The melting point is between 1393-1427 ℃. ‌

GH4145 high-temperature alloy has the following physical properties:

Has good corrosion resistance and oxidation resistance below 980 ℃. ‌

Has high strength below 800 ℃. ‌

Has good creep resistance below 700 ℃. ‌

Has good anti relaxation performance below 540 ℃. ‌

Has good formability and weldability. ‌

GH4145 high-temperature alloy has the following characteristics:

1. High temperature strength: In high temperature environments, the strength of GH4145 high-temperature alloy is still very high and can withstand various stresses at high temperatures. ‌

2. Oxidation resistance: GH4145 high-temperature alloy is not easily oxidized at high temperatures and has good oxidation resistance. ‌

3. Corrosion resistance: GH4145 high-temperature alloy has good corrosion resistance in various corrosive media. ‌

4. High temperature resistance: It has excellent oxidation resistance and creep resistance at high temperatures, and can maintain excellent mechanical properties at high temperatures. Its antioxidant temperature can reach 900 ℃, and its creep resistance temperature can reach 700 ℃. ‌

5. Mechanical properties: GH4145 high-temperature alloy has excellent mechanical properties such as tensile strength, yield strength, and fatigue strength. Its tensile strength can reach 1100MPa, yield strength can reach 900MPa, and fatigue strength can reach 100MPa. ‌

6. Stability: It has good structural stability at high temperatures and can maintain excellent mechanical properties at high temperatures. ‌

7. Welding performance: GH4145 high-temperature alloy can be connected by various welding methods, and has good strength and corrosion resistance after welding.

GH4145 high-temperature alloy is mainly used to manufacture corrosion-resistant flat wave springs, circumferential spiral springs, spiral compression springs, spring clamps, and sealing rings for aircraft engines operating at temperatures below 540 ℃.

In the aviation field, GH4145 high-temperature alloy is used to manufacture high-temperature components for turbine engines, such as combustion chambers, turbine blades, as well as high-temperature components for rocket engines and satellites.

In the aerospace field, GH4145 high-temperature alloy is also used to manufacture high-temperature components for rocket engines and satellites. In addition, in the energy field, GH4145 high-temperature alloy is used to manufacture high-temperature equipment and pipelines such as nuclear power plants and petrochemicals, demonstrating its excellent performance in high-temperature and high-pressure environments. ‌

The turbine disk, combustion chamber components, and guide vanes of aircraft engines in the aerospace field play important roles.

In the field of power industry, GH4145 high-temperature alloy is widely used in key components such as gas turbine blades and rotors in thermal power plants, as well as reactor fuel elements and structural materials in nuclear power generation.

In the field of petrochemicals, GH4145 high-temperature alloy is widely used in high-temperature and high-pressure refining and chemical production processes due to its excellent corrosion resistance and high-temperature stability. It has demonstrated outstanding performance in both pipeline manufacturing and reactor construction