GH4202
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Description
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-based precipitation hardened deformation high-temperature alloy with a temperature of -253-800 degrees Celsius. The alloy is added with tungsten and molybdenum elements for solid solution strengthening, aluminum and titanium elements are added to form an aging reinforced phase, and a small amount of boron and cerium elements are added to purify and strengthen the grain boundaries. The alloy has good comprehensive mechanical properties and stable structure. The alloy has high corrosion resistance and oxidation resistance, as well as good oxygen-rich corrosion resistance. This alloy is a typical multi-purpose high temperature alloy material.
2. GH4202 chemical composition
| alloy | % | C | Cr | In | Al | Of | Cu | W | Mo | Fe | 铈 What | B | S | P | And | Mn |
| GH4202 | Minimum value | – | 17.0 | margin | 1.0 | 2.2 | – | 4.0 | 4.0 | – | – | – | – | – | – | – |
| Maximum value | 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 | magnetic | Thermal conductivity/w/(mk)100-800℃ | Resistivity ℃)/(Ω.mm2/m)100℃ | Specific heat capacity ℃)/kg/(kg.k)℃25-800℃ | Linear expansion coefficient/(10-6/k)20-700℃ |
| 8.36 | none | 12.2-28.8 | – | – | 14.8 |
| Temperature 0/℃ | 20 | 600 | 700 | ||
| Elastic modulus E/GPa | 216 | 182 | 173 |
4. GH4202 Mechanical Properties
| type | Heat treatment | Temperature 0/°C | Tensile strength
ΣbMPa≥ |
Elongation A/%≥ | Section shrinkage Z/%≥ |
| Round stick | Solid solution state | 20 | 930 | 16 | 18 |
V. GH4202 application fields
The new high-thrust liquid rocket engine has dozens of components such as turbine rotor, rectifier gate, turbine ball shell, corrugated pipe and gas pipeline, and is in good use.
It is promoted and applied to aviation, nuclear energy, petroleum and chemical industries, and requires high corrosion resistance and chemical resistance to heat-resistant bearing parts and welded parts.
