GH2747 high temperature nickel alloy tube is a high-performance heat-resistant tubing primarily used in extreme high temperature environments. This alloy features a nickel matrix and achieves precipitation hardening through the addition of elements such as chromium, aluminum, and titanium. Operating in the solution-treated state, GH2747 high temperature nickel alloy tube withstands continuous temperatures of 1100-1250°C (2000-2250°F) and can endure short-term exposure up to 1300°C (2300°F). Its high strength, excellent microstructural stability, and superior oxidation resistance make it an ideal choice for high-temperature industrial applications.
In industrial applications, GH2747 high temperature nickel alloy tube demonstrates exceptional reliability. It is particularly suited for manufacturing oxidation-resistant components in engine combustion chambers and afterburners, as well as heat-resistant parts such as industrial furnace rolls, transmission components, and thermocouple sheaths. GH2747 high temperature alloy offers lower material costs compared to similar alloys. By increasing chromium content while boosting aluminum content and adding trace rare earth elements, the alloy achieves significantly improved oxidation resistance between 1000°C and 1300°C. These characteristics make GH2747 high temperature nickel alloy tube exceptionally suitable for manufacturing high-temperature oxidation-resistant components in petrochemical, nuclear power, and metallurgical applications.
The performance parameters of GH2747 high temperature nickel alloy tube demonstrate its outstanding behavior in high-temperature environments. According to international standard testing, the alloy tube exhibits a minimum tensile strength of 760 MPa at room temperature and an elongation exceeding 30%. Even under elevated temperatures, GH2747 maintains robust mechanical properties, retaining a minimum high-temperature strength of 350 MPa at 800°C. These performance metrics validate the reliability of GH2747 nickel alloy tube under extreme thermal conditions.
Regarding physical properties, the density of GH2747 high temperature nickel alloy tube is approximately 7.78 g/cm³, with an electrical resistivity of 1.15 μΩ·m. Regarding thermal expansion, the average linear expansion coefficient is 11.2 ± 0.3 × 10⁻⁶/℃ in the 20-200°C range, 13.8 ± 0.4 × 10⁻⁶/℃ in 200-600°C, and 15.6 ± 0.5 × 10⁻⁶/℃ in 600-900°C. GH2747 high temperature nickel alloy tube also exhibits outstanding creep resistance, achieving endurance lifetimes of 680–720 hours under 750°C/300 MPa conditions. After 50 thermal shock cycles from 800°C to room temperature, the dimensional change rate of test specimens remained below 0.03%, demonstrating exceptional thermal cycling stability.
GH2747 high temperature nickel alloy tube is indeed recyclable, primarily due to its valuable metallic composition. Market data indicates its recycling value depends mainly on nickel content, with LME (London Metal Exchange) spot nickel prices around $20–25 per kilogram. For specialized nickel recycling companies, GH2747 high temperature nickel alloy tube represents a valuable recyclable material.
When recycling GH2747 high temperature nickel alloy tube, the material's form and condition must be considered. Finished product prices typically range from $70–110 per kilogram, with special diameters or high-precision processed products potentially reaching $120–150 per kilogram. These recycled GH2747 high temperature nickel alloy tubes can be transformed into new high temperature alloy products through remelting and reprocessing, enabling resource recycling. Large-scale recycling of GH2747 significantly reduces unit costs, making the process more economically viable.
Within the high temperature nickel alloy sector, DONGSHENG Precious Metals Recycling company offers premium prices for specific grades containing higher proportions of precious metal elements. These elements substantially enhance the alloy's performance and cost. Certain high performance nickel based alloys incorporate cobalt, platinum group elements, or other precious metals. These additions substantially improve the alloy's high-temperature strength, oxidation resistance, and corrosion resistance. Such precious-metal-containing alloys are typically deployed in extreme operating conditions, such as hot-end components of aircraft engines, nuclear reactor core assemblies, and high-performance gas turbine blades.
The precious metal content in these alloys directly impacts their cost and recycling value, resulting in significantly higher initial and recycling prices compared to standard high-temperature nickel alloys. During material selection, engineers must balance performance requirements with cost considerations. In certain extreme environments, precious metal-containing high temperature nickel alloys remain irreplaceable, as their performance advantages sufficiently offset the high costs. Recycling these precious metal-containing high-temperature nickel alloys requires specialized techniques and processes to ensure effective recovery and reuse of precious metal elements, maximizing the material's lifecycle value.
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