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The GH3039 nickel superalloy pipe, also known as Nimonic 75 alloy tube, is a high-performance nickel-based superalloy specifically engineered to excel in extreme high-temperature environments. Developed for superior oxidation resistance and creep resistance, this alloy pipe is a staple in industries where sustained performance at elevated temperatures (up to 1170℃) is critical. With a density of 8.3 g/cm³ and a melting point range of 900-1170℃, the GH3039/Nimonic 75 pipe balances lightweight design with exceptional durability, making it ideal for aerospace, energy, and industrial applications that demand uncompromising thermal stability.
The GH3039 alloy pipe adheres to strict international standards, including GB/T (Chinese), ASTM, and DIN specifications, while Nimonic 75 is recognized under British Standards (BS). Both designations refer to the same nickel-based superalloy, ensuring global compatibility and interchangeability. Each pipe comes with a Material Test Certificate (MTC) verifying its chemical composition, mechanical properties, and manufacturing processes, guaranteeing compliance with industry-specific requirements for critical applications.
GH3039 | ||||||||||||||
Chemical Component | % | Ni | Cr | Fe | C | Mo | Mn | Si | Nb | Al | Ti | S | P | Cu |
Min | Allowance | 19 | 1.8 | 0.9 | 0.35 | 0.35 | ||||||||
Max | Allowance | 22 | 3 | 0.08 | 2.3 | 0.4 | 0.8 | 1.3 | 0.75 | 0.75 | 0.012 | 0.02 | 0.2 | |
Physical Property | Density | 8.3g/Cm3 | ||||||||||||
Melting Point | 900-1170℃ | |||||||||||||
At the core of the GH3039 nickel superalloy pipe’s performance is its outstanding oxidation resistance. Formulated with 19-22% chromium (Cr) and trace amounts of aluminum (Al) and titanium (Ti), the alloy forms a dense, adherent oxide layer on its surface when exposed to high temperatures and oxidizing atmospheres. This layer acts as a barrier, preventing further oxidation and degradation of the pipe—even in continuous service at temperatures up to 1100℃. For applications such as furnace tubes and jet engine components, this oxidation-resistant alloy tube ensures long service life and minimal maintenance.
Creep (time-dependent deformation under high temperature and stress) is a major challenge for high-temperature components, but the Nimonic 75 alloy tube addresses this with its superior creep resistance. The addition of 1.8-2.3% molybdenum (Mo) and 0.9-1.3% niobium (Nb) strengthens the alloy’s crystal structure, inhibiting grain boundary sliding and creep deformation. This allows the pipe to maintain its dimensional stability and mechanical strength for thousands of hours in high-temperature, high-stress environments—making it indispensable for power plant turbines, heat exchangers, and aerospace propulsion systems.
The GH3039/Nimonic 75 pipe offers a well-balanced combination of strength and ductility, even at elevated temperatures. Its precise chemical composition (nickel as the base element, with controlled amounts of Cr, Mo, Al, Ti, and Nb) ensures tensile strength, yield strength, and elongation that meet the demands of critical applications. Whether subjected to thermal cycling, pressure, or mechanical stress, the pipe retains its structural integrity, avoiding brittle fracture or permanent deformation. This balance makes it easy to fabricate (weld, bend, form) while maintaining performance.
Every element in the nickel-based superalloy pipe is carefully calibrated to enhance performance: Nickel (Ni): Allowance (primary base metal), Chromium (Cr): 19-22% (oxidation resistance), Molybdenum (Mo): 1.8-2.3% (creep resistance), Niobium (Nb): 0.9-1.3% (grain refinement), Aluminum (Al): 0.35-0.75% (oxide layer formation), Titanium (Ti): 0.35-0.75% (strengthening), Iron (Fe): Max 3%, Carbon (C): Max 0.08%, Manganese (Mn): Max 0.4%, Silicon (Si): Max 0.8%, Sulfur (S): Max 0.012%, Phosphorus (P): Max 0.02%, Copper (Cu): Max 0.2%. Impurity control ensures the alloy’s purity and consistency.
The GH3039 alloy pipe boasts stable physical properties across a wide temperature range. With a density of 8.3 g/cm³, it is lightweight enough for aerospace and automotive applications while offering the strength to withstand high pressures. Its thermal conductivity and specific heat capacity are optimized for heat transfer applications, such as heat exchangers and boiler tubes. Additionally, the alloy’s low thermal expansion coefficient minimizes dimensional changes during temperature fluctuations, ensuring a tight fit in assembled systems and reducing the risk of leaks or failures.
The GH3039 nickel superalloy pipe is a critical component in aerospace and aviation systems, including jet engines, gas turbines, and rocket propulsion systems. Its ability to resist oxidation and creep at temperatures up to 1170℃ makes it ideal for exhaust pipes, combustion chambers, and turbine blades. The Nimonic 75 alloy tube’s lightweight design also contributes to fuel efficiency, a key priority in aerospace engineering.
In thermal power plants, nuclear power plants, and renewable energy systems (e.g., concentrated solar power), the nickel-based superalloy pipe is used in boilers, heat exchangers, and steam turbines. It withstands the high temperatures and pressures of steam generation, ensuring efficient energy conversion and long equipment life. Its creep resistance is particularly valuable in power plant turbines, where components operate under sustained high stress and temperature.
The GH3039/Nimonic 75 pipe is well-suited for chemical and petrochemical plants, where it is used in reactors, pipelines, and catalytic crackers. It resists corrosion from aggressive chemicals (e.g., hydrocarbons, acids, and catalysts) and maintains performance at elevated temperatures during chemical reactions and distillation processes. Its durability reduces downtime and maintenance costs in harsh processing environments.
Industrial furnaces (e.g., heat treatment furnaces, glass melting furnaces) and heat exchangers rely on the oxidation-resistant alloy tube to withstand continuous exposure to high temperatures and oxidizing atmospheres. The GH3039 pipe’s ability to form a protective oxide layer prevents scaling and degradation, extending the service life of furnace liners, heating elements, and heat exchanger tubes. It is also used in waste heat recovery systems, maximizing energy efficiency.
Modern high-performance vehicles and commercial trucks use turbochargers to boost engine power, and the Nimonic 75 alloy tube is a key component in turbocharger exhaust systems. It withstands the extreme temperatures (up to 1000℃) and pressure fluctuations of exhaust gases, ensuring reliable turbocharger operation and improving engine performance. Its lightweight design also reduces turbo lag, enhancing driving dynamics.
We offer full customization of GH3039 nickel superalloy pipe dimensions to fit your specific application. Available outer diameters range from 10mm to 200mm, with wall thicknesses from 1mm to 20mm. We accommodate both standard and non-standard sizes, including seamless and welded options. Whether you need small-diameter pipes for precision aerospace components or large-diameter pipes for industrial furnaces, our manufacturing team delivers precise, consistent dimensions.
To enhance performance and compatibility, we provide various surface treatments for the Nimonic 75 alloy tube, including pickling, passivation, and bright annealing. Pickling removes surface oxides and contaminants, while passivation strengthens the protective oxide layer, boosting corrosion resistance. Bright annealing delivers a smooth, clean surface ideal for hygienic or high-precision applications. We also offer custom coatings (e.g., anti-corrosion, thermal barrier coatings) to meet specialized requirements.
We ensure the safe delivery of your nickel-based superalloy pipe with robust packaging. Pipes are wrapped in moisture-proof film, bundled with steel straps, and placed in wooden crates or steel tubes to prevent rust, scratches, or bending during transit. We offer global shipping via sea, air, or land, with flexible delivery options to meet your timeline. Custom packaging (e.g., export crates, labeled bundles) and documentation (e.g., customs declarations) are provided for international orders.
Our team of materials engineers and technical experts provides end-to-end support for the GH3039/Nimonic 75 pipe. We assist with material selection, design optimization, welding guidelines, and performance testing. Whether you need help determining the right pipe size for your heat exchanger or troubleshooting installation issues, we offer timely, expert advice. We also provide after-sales support, including maintenance recommendations and replacement parts, to ensure long-term performance.
GH3039 and Nimonic 75 are essentially the same nickel-based superalloy—the difference lies in their designation standards. GH3039 is the Chinese (GB/T) designation, while Nimonic 75 is the British (BS) and international designation. Both share the same chemical composition, mechanical properties, and performance characteristics, making them interchangeable in most applications.
The Nimonic 75 alloy tube achieves superior creep resistance through its chemical composition and microstructural design. Molybdenum (Mo) and niobium (Nb) strengthen the alloy’s crystal lattice, inhibiting grain boundary sliding (a key cause of creep). Additionally, aluminum (Al) and titanium (Ti) form intermetallic compounds (e.g., γ’ phase) that further reinforce the structure, preventing deformation under high temperature and stress.
Yes, GH3039 nickel superalloy tubes are weldable using standard welding processes, including TIG (GTAW), MIG (GMAW), and resistance welding. To ensure weld integrity, we recommend using matching nickel-based filler metals (e.g., ERNiCrMo-3) and preheating the base metal to 150-200℃. Post-weld heat treatment (solution annealing) may be required to restore corrosion resistance and mechanical properties in critical applications—our technical team can provide detailed welding guidelines.
Every batch of nickel-based superalloy pipe undergoes rigorous quality inspections, including chemical composition analysis (XRF/ICP), mechanical property testing (tensile, creep, fatigue), dimensional accuracy checks (laser measurement), surface inspection (ultrasonic, eddy current), and non-destructive testing (NDT) for defects. We also conduct oxidation and corrosion resistance testing to ensure compliance with industry standards. A comprehensive MTC is provided with each order, documenting all test results.
The GH3039 nickel superalloy pipe, also known as Nimonic 75 alloy tube, is a high-performance nickel-based superalloy specifically engineered to excel in extreme high-temperature environments. Developed for superior oxidation resistance and creep resistance, this alloy pipe is a staple in industries where sustained performance at elevated temperatures (up to 1170℃) is critical. With a density of 8.3 g/cm³ and a melting point range of 900-1170℃, the GH3039/Nimonic 75 pipe balances lightweight design with exceptional durability, making it ideal for aerospace, energy, and industrial applications that demand uncompromising thermal stability.
The GH3039 alloy pipe adheres to strict international standards, including GB/T (Chinese), ASTM, and DIN specifications, while Nimonic 75 is recognized under British Standards (BS). Both designations refer to the same nickel-based superalloy, ensuring global compatibility and interchangeability. Each pipe comes with a Material Test Certificate (MTC) verifying its chemical composition, mechanical properties, and manufacturing processes, guaranteeing compliance with industry-specific requirements for critical applications.
GH3039 | ||||||||||||||
Chemical Component | % | Ni | Cr | Fe | C | Mo | Mn | Si | Nb | Al | Ti | S | P | Cu |
Min | Allowance | 19 | 1.8 | 0.9 | 0.35 | 0.35 | ||||||||
Max | Allowance | 22 | 3 | 0.08 | 2.3 | 0.4 | 0.8 | 1.3 | 0.75 | 0.75 | 0.012 | 0.02 | 0.2 | |
Physical Property | Density | 8.3g/Cm3 | ||||||||||||
Melting Point | 900-1170℃ | |||||||||||||
At the core of the GH3039 nickel superalloy pipe’s performance is its outstanding oxidation resistance. Formulated with 19-22% chromium (Cr) and trace amounts of aluminum (Al) and titanium (Ti), the alloy forms a dense, adherent oxide layer on its surface when exposed to high temperatures and oxidizing atmospheres. This layer acts as a barrier, preventing further oxidation and degradation of the pipe—even in continuous service at temperatures up to 1100℃. For applications such as furnace tubes and jet engine components, this oxidation-resistant alloy tube ensures long service life and minimal maintenance.
Creep (time-dependent deformation under high temperature and stress) is a major challenge for high-temperature components, but the Nimonic 75 alloy tube addresses this with its superior creep resistance. The addition of 1.8-2.3% molybdenum (Mo) and 0.9-1.3% niobium (Nb) strengthens the alloy’s crystal structure, inhibiting grain boundary sliding and creep deformation. This allows the pipe to maintain its dimensional stability and mechanical strength for thousands of hours in high-temperature, high-stress environments—making it indispensable for power plant turbines, heat exchangers, and aerospace propulsion systems.
The GH3039/Nimonic 75 pipe offers a well-balanced combination of strength and ductility, even at elevated temperatures. Its precise chemical composition (nickel as the base element, with controlled amounts of Cr, Mo, Al, Ti, and Nb) ensures tensile strength, yield strength, and elongation that meet the demands of critical applications. Whether subjected to thermal cycling, pressure, or mechanical stress, the pipe retains its structural integrity, avoiding brittle fracture or permanent deformation. This balance makes it easy to fabricate (weld, bend, form) while maintaining performance.
Every element in the nickel-based superalloy pipe is carefully calibrated to enhance performance: Nickel (Ni): Allowance (primary base metal), Chromium (Cr): 19-22% (oxidation resistance), Molybdenum (Mo): 1.8-2.3% (creep resistance), Niobium (Nb): 0.9-1.3% (grain refinement), Aluminum (Al): 0.35-0.75% (oxide layer formation), Titanium (Ti): 0.35-0.75% (strengthening), Iron (Fe): Max 3%, Carbon (C): Max 0.08%, Manganese (Mn): Max 0.4%, Silicon (Si): Max 0.8%, Sulfur (S): Max 0.012%, Phosphorus (P): Max 0.02%, Copper (Cu): Max 0.2%. Impurity control ensures the alloy’s purity and consistency.
The GH3039 alloy pipe boasts stable physical properties across a wide temperature range. With a density of 8.3 g/cm³, it is lightweight enough for aerospace and automotive applications while offering the strength to withstand high pressures. Its thermal conductivity and specific heat capacity are optimized for heat transfer applications, such as heat exchangers and boiler tubes. Additionally, the alloy’s low thermal expansion coefficient minimizes dimensional changes during temperature fluctuations, ensuring a tight fit in assembled systems and reducing the risk of leaks or failures.
The GH3039 nickel superalloy pipe is a critical component in aerospace and aviation systems, including jet engines, gas turbines, and rocket propulsion systems. Its ability to resist oxidation and creep at temperatures up to 1170℃ makes it ideal for exhaust pipes, combustion chambers, and turbine blades. The Nimonic 75 alloy tube’s lightweight design also contributes to fuel efficiency, a key priority in aerospace engineering.
In thermal power plants, nuclear power plants, and renewable energy systems (e.g., concentrated solar power), the nickel-based superalloy pipe is used in boilers, heat exchangers, and steam turbines. It withstands the high temperatures and pressures of steam generation, ensuring efficient energy conversion and long equipment life. Its creep resistance is particularly valuable in power plant turbines, where components operate under sustained high stress and temperature.
The GH3039/Nimonic 75 pipe is well-suited for chemical and petrochemical plants, where it is used in reactors, pipelines, and catalytic crackers. It resists corrosion from aggressive chemicals (e.g., hydrocarbons, acids, and catalysts) and maintains performance at elevated temperatures during chemical reactions and distillation processes. Its durability reduces downtime and maintenance costs in harsh processing environments.
Industrial furnaces (e.g., heat treatment furnaces, glass melting furnaces) and heat exchangers rely on the oxidation-resistant alloy tube to withstand continuous exposure to high temperatures and oxidizing atmospheres. The GH3039 pipe’s ability to form a protective oxide layer prevents scaling and degradation, extending the service life of furnace liners, heating elements, and heat exchanger tubes. It is also used in waste heat recovery systems, maximizing energy efficiency.
Modern high-performance vehicles and commercial trucks use turbochargers to boost engine power, and the Nimonic 75 alloy tube is a key component in turbocharger exhaust systems. It withstands the extreme temperatures (up to 1000℃) and pressure fluctuations of exhaust gases, ensuring reliable turbocharger operation and improving engine performance. Its lightweight design also reduces turbo lag, enhancing driving dynamics.
We offer full customization of GH3039 nickel superalloy pipe dimensions to fit your specific application. Available outer diameters range from 10mm to 200mm, with wall thicknesses from 1mm to 20mm. We accommodate both standard and non-standard sizes, including seamless and welded options. Whether you need small-diameter pipes for precision aerospace components or large-diameter pipes for industrial furnaces, our manufacturing team delivers precise, consistent dimensions.
To enhance performance and compatibility, we provide various surface treatments for the Nimonic 75 alloy tube, including pickling, passivation, and bright annealing. Pickling removes surface oxides and contaminants, while passivation strengthens the protective oxide layer, boosting corrosion resistance. Bright annealing delivers a smooth, clean surface ideal for hygienic or high-precision applications. We also offer custom coatings (e.g., anti-corrosion, thermal barrier coatings) to meet specialized requirements.
We ensure the safe delivery of your nickel-based superalloy pipe with robust packaging. Pipes are wrapped in moisture-proof film, bundled with steel straps, and placed in wooden crates or steel tubes to prevent rust, scratches, or bending during transit. We offer global shipping via sea, air, or land, with flexible delivery options to meet your timeline. Custom packaging (e.g., export crates, labeled bundles) and documentation (e.g., customs declarations) are provided for international orders.
Our team of materials engineers and technical experts provides end-to-end support for the GH3039/Nimonic 75 pipe. We assist with material selection, design optimization, welding guidelines, and performance testing. Whether you need help determining the right pipe size for your heat exchanger or troubleshooting installation issues, we offer timely, expert advice. We also provide after-sales support, including maintenance recommendations and replacement parts, to ensure long-term performance.
GH3039 and Nimonic 75 are essentially the same nickel-based superalloy—the difference lies in their designation standards. GH3039 is the Chinese (GB/T) designation, while Nimonic 75 is the British (BS) and international designation. Both share the same chemical composition, mechanical properties, and performance characteristics, making them interchangeable in most applications.
The Nimonic 75 alloy tube achieves superior creep resistance through its chemical composition and microstructural design. Molybdenum (Mo) and niobium (Nb) strengthen the alloy’s crystal lattice, inhibiting grain boundary sliding (a key cause of creep). Additionally, aluminum (Al) and titanium (Ti) form intermetallic compounds (e.g., γ’ phase) that further reinforce the structure, preventing deformation under high temperature and stress.
Yes, GH3039 nickel superalloy tubes are weldable using standard welding processes, including TIG (GTAW), MIG (GMAW), and resistance welding. To ensure weld integrity, we recommend using matching nickel-based filler metals (e.g., ERNiCrMo-3) and preheating the base metal to 150-200℃. Post-weld heat treatment (solution annealing) may be required to restore corrosion resistance and mechanical properties in critical applications—our technical team can provide detailed welding guidelines.
Every batch of nickel-based superalloy pipe undergoes rigorous quality inspections, including chemical composition analysis (XRF/ICP), mechanical property testing (tensile, creep, fatigue), dimensional accuracy checks (laser measurement), surface inspection (ultrasonic, eddy current), and non-destructive testing (NDT) for defects. We also conduct oxidation and corrosion resistance testing to ensure compliance with industry standards. A comprehensive MTC is provided with each order, documenting all test results.
