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Aircraft Structures Nickel Based Superalloys Precipitation Hardened GH4145 800°C
Equal Grades | Inconel X-750, NiCr15Fe7TiAl, 2.4669,UNS N07750 | Melting Range | 1395°C~1425°C |
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Density | 8.25g/cm3 | Forms Of Supply | Plate, Strip, Bar, Forging, Ring, Wire, Tube |
Spec | GB/T 14992 | Product Name | Nickel Cobalt Alloy |
High Light | nickel based alloys,high temperature nickel alloys |
GH4145 Nickel Alloy Precipitation-hardened Superalloy up to 800°C Application
GH4145 is a precipitation-hardenable nickel-chromium alloy used for its corrosion and oxidation resistance and high strength at temperatures up to 1300°F. Although much of the effect of precipitation hardening is lost with increasing temperature over 1300°F, heat-treated material has useful strength up to 1800°F. GH4145 also has excellent properties down to cryogenic termperatures.
Depending on the application and the properties desired, various heat treatments are employed. For service above 1100°F, particularly where loads are to be sustained for long times, optimum properties are achieved by solution treating (2100°F) plus stabilization treating (1550°F) plus precipitation treating (1300°F). For service below 1100°F, the alloy may be strengthened by precipitation treating after hot or cold working or by precipitation treating after equalizing or solution treating. A furnace-cooling treatment is also used to develop optimum properties for some applications.
Chemical compositin
Element | C | Cr | Ni | Co | Al | Ti | Fe | Nb | Mn | Si | S | P | Cu |
Weight(%) | 0.08 max | 14.00~17.00 | 70.00 min | 1.00 max | 0.40~1.00 | 2.25~2.75 | 5.00~9.00 | 0.70~1.20 | 1.00 max | 0.50 max | 0.010 max | 0.015 max | 0.50 max |
Features
- Good creep rupture strength at high temperatures
- Not as strong as Nimonic 90
- Very good at cryogenic temperatures
- Age hardenable
- High temperature dynamic applications
Applications
- Nuclear reactors
- Gas turbines
- Rocket engines
- Pressure vessels
- Aircraft structures
Available Product Forms
Sheet, strip, plate, round bar, flat bar, forging stock, hexagon, wire, tube and extruded