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GH4145

Nickel+Cobalt Ni+Co ≥70%
Chromium Cr 14.0~17.0%
Iron Fe 5.0~9.0%
Titanium Ti 2.25~2.75%
Niobium+Tantalum Nb+Ta 0.7~1.2%
Manganese Mn ≤1.0%
Cobalt Co ≤1.0%
Aluminium Al 0.4~1.0%
Silicon Si ≤0.5%
Copper Cu ≤0.5%
Carbon C ≤0.08%
Phosphorus P ≤0.015%
Sulphur S ≤0.01%

          


GH4145  has good corrosion resistance and oxidation resistance below 980℃, high strength below 800℃, and good relaxation resistance below 540℃. It also has good formability and welding performance. In low temperature environment Has excellent mechanical properties. The alloy has good corrosion resistance and creep rupture strength under high temperature environment, good mechanical properties, and a wide range of applications:
1. Manufacturing springs and bolts that work at high temperatures; rotor blades, impellers and other structural parts on gas turbines;
2. The thrust chamber on the rocket engine;
3. Thrust reverse device on the aircraft;
4. Large high-pressure vessel;
5. Elastic air sealing sheet, elastic sealing die sheet, rubber mechanical electric heating blade.

GH4145 thermal conductivity
 
θ/℃ 50 100 300 500 900
λ/(W/(m•C)) 14.7 15.9 20.1 25.1 37.3

GH4145 coefficient of linear expansion
 
θ/℃ 20~200 20~300 20~400 20~500 20~600 20~700 20~800
α/10-6C-1 13.1 13.5 14.1 14.4 15.0 15.6 16.2
 
GH4145 physical properties
 
Density Melting point Magnetic properties
g/cm3  
8.25 1395-1425 Non
 
Mechanical properties of GH4145 alloy at room temperature
 
Heat treatment method Yield Strength tensile strength Elongation Brinell hardness
  Mpa,≥ Mpa,≥ %,≥ HB≤
Solution treatment 1267 868 25 400
 
 

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