How GH5188 Alloy Powder Supports Extreme High-Temperature Structural Applications

GH5188 alloy powder is a cobalt-based high-temperature alloy known for its exceptional strength, oxidation resistance, and structural stability. It is widely used in aerospace, gas turbines, nuclear reactors, and advanced energy equipment operating under extreme thermal and mechanical stress.

Excellent High-Temperature Strength and Oxidation Resistance

GH5188 contains cobalt, chromium, nickel, tungsten, and small additions of lanthanum for enhanced grain boundary control. It offers:

• Stable tensile and creep strength above 1000°C

• Exceptional oxidation resistance in oxidizing and corrosive environments

• Structural integrity maintained during long-term thermal exposure

Optimized Composition for Harsh Conditions

The microstructure of GH5188 is engineered to deliver:

• Strong grain boundary strengthening

• Stable gamma matrix phase and carbide dispersion

• Resistance to phase transformation under thermal cycling

These features enable reliable performance in turbine blades, combustion chambers, and heat shields.

Ideal for Additive Manufacturing

GH5188 alloy powder is gas-atomized with:

• High sphericity and controlled particle size (15–53 μm or 45–105 μm)

• Excellent flowability for laser powder bed fusion and directed energy deposition

• Compatibility with selective laser melting (SLM) and electron beam melting (EBM)

Application Fields

• Aerospace engine hot-section parts and afterburners

• Gas turbine vanes and combustion liners

• Nuclear reactor heat shields and structural walls

• High-temperature tooling for energy and metallurgy

Benefits Summary

• Stable mechanical properties above 1000°C

• Strong resistance to oxidation and corrosion

• Adaptable to additive manufacturing and conventional forming

• Proven reliability in long-duration thermal service

Frequently Asked Questions (FAQ)

Q1: What is the typical particle size for GH5188 alloy powder?
A1: Standard ranges are 15–45 μm for AM and 45–105 μm for thermal spray.

Q2: Can GH5188 replace Hastelloy or Inconel in some uses?
A2: Yes, GH5188 offers superior creep resistance and oxidation stability for ultra-high-temperature environments.

Q3: Is GH5188 suitable for HIP or MIM processes?
A3: Yes, the powder’s morphology supports both hot isostatic pressing and metal injection molding, depending on the grain size distribution.

Conclusion

GH5188 alloy powder delivers a robust solution for industries demanding strength, stability, and corrosion resistance at extreme temperatures. Its adaptability for additive manufacturing further expands its application potential.

Contact HUAXIAO TECH to request detailed specifications or discuss your GH5188 powder requirements.