High-performance alloy material for industrial engineering and critical application conditions.
Scope of supply for Aviation Group
Forgings, round rods, steel plates, rings, seamless pipes, steel plates/steel belts, wire welding materials, welcome to inquire!
1. Introduction to GH698/GH4698 Materials
GH4698/GH698 is a nickel-based superalloy strengthened by aluminum, titanium, molybdenum, niobium and other elements. Developed on the basis of GH4033 alloy, it possesses high rupture strength and balanced comprehensive performance within 500℃~800℃. Widely manufactured into critical load-bearing components including aero-engine turbine disks, compressor disks, deflectors and bearing rings, with service temperature ranging from 750℃ to 800℃.
Implementation standards
GB/T14992-2005 High Temperature Alloy
HB 5285-1984 GH698 alloy disk forgings for aviation
GJB 3782-1999 Specifications forged round cakes for high temperature alloy for aviation
GJB 1953-1994 Specifications on Hot Rolled Rods for High Temperature Alloys for Rotating Parts of Aero Engines
GJB 2611-1996 Specifications for Cold Drawn Rods for High Temperature Alloys for Aviation
GJB 2612-1996 Specifications for Cold Drawn Welding Wires of High Temperature Alloys for Aviation
GJB 3020-1997 Specifications for High Temperature Alloy Ring Blanks for Aviation
GJB 3165-1998 Specifications on Hot Rolled & Forged Rods for Aviation Load-Bearing Components
GJB 3782-1999 Specifications for High Temperature Alloy Rods for Aviation
HB 5198-1982 Wrought High-Temperature Alloy Rods for Aviation Blades
2. Chemical components
| Alloy | Limit | Ni | Cr | Fe | C | Mn | Si | Mo | Al | Ti | Nb | P | Cu | Ce | B | S |
| GH698/GH4698 | Minimum | Bal | 13.0 | – | – | – | – | 2.8 | 1.3 | 2.35 | 1.8 | – | – | – | – | – |
| Maximum | 16.0 | 2.0 | 0.08 | 0.4 | 0.6 | 3.2 | 1.7 | 2.75 | 2.2 | 0.015 | 0.07 | 0.02 | 0.005 | 0.007 |
3. Physical properties
| Density | 8.32g/cm³ |
| Melting point | 1340-1365℃ |
Material characteristics
High rupture strength
Excellent comprehensive mechanical performance
Stable microstructure under long-term service
4. Application areas
Suitable for critical load-bearing parts of aircraft engines working continuously at 750~800℃, such as turbine disks, compressor disks, deflectors and bearing rings.
It maintains high rupture strength at 500~800℃ and can be widely applied to various high-demand working conditions, including aero-engine turbine disks, compressor disks, deflectors and bearing rings.
