Dengwei International Trade is mainly engaged in various high-end steel import and export businesses, and is a brand enterprise in the metal circulation industry.
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GH3128 superalloy round bar is a high-performance nickel-chromium alloy engineered for critical aerospace and industrial applications. Designed to operate in extreme heat and oxidizing environments, GH3128 offers superior oxidation resistance up to 1100°C, excellent mechanical strength, and long-term stability. Compliant with AMS 5537, this alloy is ideal for use in gas turbines, jet engines, combustion chambers, high-temperature structural components, and nuclear energy systems.
Exceptional oxidation resistance up to 1100°C
Stable mechanical properties under prolonged thermal stress
Good weldability and formability for complex machining
Complies with AMS 5537 aerospace-grade specifications
Corrosion and carburization resistance in harsh atmospheres
The chemical composition ensures superior thermal and structural performance:
| Element | Typical Content (%) |
|---|---|
| Nickel (Ni) | 58.0 – 63.0 |
| Chromium (Cr) | 20.0 – 23.0 |
| Molybdenum (Mo) | 4.0 – 6.0 |
| Tungsten (W) | 2.0 – 3.0 |
| Iron (Fe) | ≤ 3.0 |
| Cobalt (Co) | ≤ 2.0 |
| Carbon (C) | ≤ 0.10 |
| Manganese (Mn) | ≤ 0.50 |
| Silicon (Si) | ≤ 0.50 |
| Property | Value | Condition |
|---|---|---|
| Tensile Strength | ≥ 830 MPa | Room Temperature |
| Yield Strength | ≥ 450 MPa | Room Temperature |
| Elongation | ≥ 20% | Room Temperature |
| Hardness | 220 – 260 HB | Annealed |
| Service Temperature | ≤ 1100°C | Continuous Operation |
We supply GH3128 round bars in various diameters and custom cut lengths:
| Diameter Range | Length | Tolerance | Surface Finish |
|---|---|---|---|
| 10 mm – 200 mm | 1000 mm – 6000 mm | H9–H11 or as required | Peeled, Turned, Ground, Polished |
Due to its excellent high-temperature stability and strength, GH3128 is widely used in:
Aerospace: Jet engine turbine discs, nozzle guide vanes, afterburner parts
Power Generation: Heat exchangers, furnace parts, steam turbine blades
Nuclear Sector: Reactor structural components, containment parts
Metallurgy: Furnace fixtures, radiant tubes, high-temp processing tools
GH3128 combines high oxidation resistance, thermal fatigue strength, and creep resistance — essential properties for aerospace engine components operating above 1000°C.
Yes, GH3128 round bars can be machined using carbide tools under controlled conditions. For best results, it is recommended to machine in the annealed state.
GH3128 has good weldability using standard nickel alloy welding procedures. Post-weld heat treatment may be required depending on service conditions.
Material Test Certificate (MTC) in accordance with EN 10204 3.1 is provided, along with chemical and mechanical test results. AMS 5537 compliance can also be stated.
Strict quality control with full traceability
Custom sizes and OEM support available
Fast delivery with international logistics
Responsive technical support and after-sales service
GH3128 superalloy round bar is a high-performance nickel-chromium alloy engineered for critical aerospace and industrial applications. Designed to operate in extreme heat and oxidizing environments, GH3128 offers superior oxidation resistance up to 1100°C, excellent mechanical strength, and long-term stability. Compliant with AMS 5537, this alloy is ideal for use in gas turbines, jet engines, combustion chambers, high-temperature structural components, and nuclear energy systems.
Exceptional oxidation resistance up to 1100°C
Stable mechanical properties under prolonged thermal stress
Good weldability and formability for complex machining
Complies with AMS 5537 aerospace-grade specifications
Corrosion and carburization resistance in harsh atmospheres
The chemical composition ensures superior thermal and structural performance:
| Element | Typical Content (%) |
|---|---|
| Nickel (Ni) | 58.0 – 63.0 |
| Chromium (Cr) | 20.0 – 23.0 |
| Molybdenum (Mo) | 4.0 – 6.0 |
| Tungsten (W) | 2.0 – 3.0 |
| Iron (Fe) | ≤ 3.0 |
| Cobalt (Co) | ≤ 2.0 |
| Carbon (C) | ≤ 0.10 |
| Manganese (Mn) | ≤ 0.50 |
| Silicon (Si) | ≤ 0.50 |
| Property | Value | Condition |
|---|---|---|
| Tensile Strength | ≥ 830 MPa | Room Temperature |
| Yield Strength | ≥ 450 MPa | Room Temperature |
| Elongation | ≥ 20% | Room Temperature |
| Hardness | 220 – 260 HB | Annealed |
| Service Temperature | ≤ 1100°C | Continuous Operation |
We supply GH3128 round bars in various diameters and custom cut lengths:
| Diameter Range | Length | Tolerance | Surface Finish |
|---|---|---|---|
| 10 mm – 200 mm | 1000 mm – 6000 mm | H9–H11 or as required | Peeled, Turned, Ground, Polished |
Due to its excellent high-temperature stability and strength, GH3128 is widely used in:
Aerospace: Jet engine turbine discs, nozzle guide vanes, afterburner parts
Power Generation: Heat exchangers, furnace parts, steam turbine blades
Nuclear Sector: Reactor structural components, containment parts
Metallurgy: Furnace fixtures, radiant tubes, high-temp processing tools
GH3128 combines high oxidation resistance, thermal fatigue strength, and creep resistance — essential properties for aerospace engine components operating above 1000°C.
Yes, GH3128 round bars can be machined using carbide tools under controlled conditions. For best results, it is recommended to machine in the annealed state.
GH3128 has good weldability using standard nickel alloy welding procedures. Post-weld heat treatment may be required depending on service conditions.
Material Test Certificate (MTC) in accordance with EN 10204 3.1 is provided, along with chemical and mechanical test results. AMS 5537 compliance can also be stated.
Strict quality control with full traceability
Custom sizes and OEM support available
Fast delivery with international logistics
Responsive technical support and after-sales service
