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 GH4202 Materials
GH4202 is a Ni-Cr precipitation-hardened wrought superalloy suitable for service temperatures ranging from -253℃ to 800℃. Tungsten and molybdenum are added for solid-solution strengthening, aluminum and titanium form aging-strengthened precipitates, while trace boron and cerium purify grain boundaries and enhance boundary strength. The alloy delivers balanced mechanical properties and stable microstructure, featuring outstanding corrosion resistance, oxidation resistance and excellent resistance to oxygen-rich corrosion. It is a versatile multi-purpose high-temperature alloy.
2. GH4202 chemical composition
| Alloy | Limit | C | Cr | Ni | Al | Ti | Cu | W | Mo | Fe | Ce | B | S | P | Si | Mn |
| GH4202 | Minimum | – | 17.0 | Bal | 1.0 | 2.2 | – | 4.0 | 4.0 | – | – | – | – | – | – | – |
| Maximum | 0.08 | 20.0 | 1.5 | 2.6 | 0.07 | 5.0 | 5.0 | 4.0 | 0.01 | 0.01 | 0.010 | 0.015 | 0.60 | 0.50 |
3. GH4202 physical properties
| Density(g/cm³) | Magnetism | Thermal conductivity W/(m·K) 100-800℃ | Resistivity Ω·mm²/m 100℃ | Specific heat capacity J/(kg·K) 25-800℃ | Linear expansion coefficient 10⁻⁶/K 20-700℃ |
| 8.36 | Non-magnetic | 12.2-28.8 | – | – | 14.8 |
| Temperature/℃ | 20 | 600 | 700 | ||
| Elastic modulus E/GPa | 216 | 182 | 173 |
4. GH4202 Mechanical Properties
| Product form | Heat treatment state | Test temperature/℃ | Tensile strength σb MPa ≥ | Elongation A/% ≥ | Reduction of area Z/% ≥ |
| Round bar | Solid solution treated | 20 | 930 | 16 | 18 |
5. GH4202 application fields
It has been successfully applied to dozens of components of new high-thrust liquid rocket engines, including turbine rotors, rectifier rings, turbine casings, corrugated pipes and gas pipelines.
It is also promoted for use in aviation, nuclear energy, petroleum and chemical industries, for heat-resistant load-bearing parts and welded components requiring high corrosion resistance.
