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 GH4145 Materials
GH4145 features excellent corrosion and oxidation resistance up to 980℃, high tensile strength below 800℃, outstanding stress relaxation resistance under 540℃, favorable formability and weldability, and superior mechanical properties at low temperatures.
2. Chemical composition of GH4145
| Alloy | Limit | C | Cr | Ni | Al | Ti | Fe | Nb+Ta | Co | Mn | Si | S | Cu | P |
| GH4145 | Minimum | – | 14.0 | 70.0 | 0.4 | 2.25 | 5.0 | 0.7 | – | – | – | – | – | – |
| Maximum | 0.08 | 17.0 | Bal | 1.0 | 2.75 | 9.0 | 1.2 | 1.0 | 1.0 | 0.50 | 0.01 | 0.50 | 0.015 |
Note: The Mn and Si limits above apply to bars, forgings, rings and wires; for sheets, strips and pipes: Mn≤0.35%, Si≤0.35%.
3. GH4145 physical properties
| Density(g/cm³) | Melting point(℃) |
| 8.28 | 1397-1427 |
Room temperature mechanical properties of alloy in solid solution state:
| Alloy state | Tensile strength Rm N/mm² | Yield strength RP0.2 N/mm² | Elongation A5 % | Brinell hardness HB |
| Solid solution state | ≥1267 | ≥868 | ≥25 | ≤400 |
4. GH4145 material characteristics
It has good corrosion resistance and oxidation resistance below 980℃, high strength below 800℃, excellent stress relaxation resistance under 540℃, good forming and welding performance, and excellent mechanical properties at low temperatures.
5. GH4145 application fields
High-temperature springs and bolts; gas turbine rotor blades, impellers and other structural components
Rocket engine thrust chambers
Aircraft thrust reverser components
Large high-pressure vessels
Elastic gas sealing plates, elastic sealing mold plates, electric heating blades for rubber processing machinery
