GH2747
GH2747 is a precipitation-hardened superalloy based on Fe-Ni-Cr, used in solution heat-treated condition. It operates at long-term working temperatures of 1100°C to 1250°C, with short-term use up to 1300°C. The high-temperature heat-resistant and oxidation-resistant alloy GH2747 boasts high strength, good microstructural stability, and excellent oxidation and corrosion resistance. The alloy has good weldability and can be welded using various processes.
GH2747 Application Fields:
GH747 is used in the manufacturing of high-temperature, oxidation-resistant components for aerospace and aerospace engine combustion chambers, as well as afterburner chambers. It is also employed in the production of various heat-resistant parts for industrial furnace rolls, transmission devices, thermocouple sleeves, and more. Particularly suitable for high-temperature oxidation-resistant components in petrochemical, nuclear energy, and metallurgy fields.
GH2747 Antioxidant Property:
The material cost of GH2747 is lower than that of similar high-temperature alloys. By increasing the chromium content and adding aluminum elements as well as trace rare earth elements, the alloy's oxidation resistance from 1000℃ to 1300℃ is significantly improved.
GH2747 Equivalent Brand Number:
GH747, HAYNES747 (US), ЭП747 (Russia)
GH2747 Material Technical Standard:
GB/T 14992 Classification and Marking of High-Temperature Alloys and Intermetallic High-Temperature Materials
Q/GYB 511 GH2747 Hot-Rolled and Forged Bars
Q/GYB 512 GH2747 Cold Drawn (Rolled) Seamless Steel Pipe
GH2747 Chemical Composition:
Carbon C, Silicon Si, Manganese Mn, Phosphorus P, Sulfur S, Chromium Cr
≤0.10 ≤1.0 ≤1.0 ≤0.02 ≤0.025 15-17
Nickel (Ni) Molybdenum (Mo) Nitrogen (N) Copper (Cu) Iron (Fe) Niobium (Nb)
44-46 - ~ - Remaining -
Boron B, Titanium Ti: Aluminum Al, Vanadium V, Tungsten W ***Ce
- - 2.9-3.9 ~ - ≤0.03
GH2747 Material Specification:
Hot-rolled bars: 10~100mm, Forged bars: 100mm~350mm, Cold-rolled thin plates: 0.05mm-4.0mm, Hot-rolled plates: 4mm~14mm, With 2mm-10mm thickness, various size forgings and ring parts, inventory in different brands and sizes.
GH2747 Physical Properties:
Density g/cm³ Magnetic Property Thermal Conductivity /w/(m.k) 100~900 Electrical Resistivity /Ω.mm2/m) 20~900 Specific Heat Capacity /kg/(kg.k) 100~800 Coefficient of Linear Thermal Expansion /10-6/k) 20~800
8.26 10.5-24.3 ~ - 17.07
Temperature: 0/ 20, 500, 600, 700, 800
Elastic Modulus E/GPa 218 177 159 146 128
GH2747 Welding Properties:
Alloys can be welded effectively using all welding methods. TIG welding, spot welding, roll welding, and electron beam welding yield excellent results. When welding dissimilar materials, it is possible to use the base metal wire as the filler material, or opt for a filler material of the same type of alloy.
GH2747 Main Specifications:
GH2747 Seamless Tube, GH2747 Steel Plate, GH2747 Round Bar, GH2747 Forging, GH2747 Ring, GH2747 Welded Pipe, GH2747 Steel Strip, GH2747 Rod, GH2747 Wire Material and Matching Welding Materials, GH2747 Round Cake, GH2747 Flat Bar, GH2747 Hex Bar, etc.
