GH4145 alloy is mainly a nickel-based superalloy with γ"[Ni3(Al, Ti, Nb)] phase aging strengthening. It has good corrosion resistance and oxidation resistance below 980ºC, and high strength below 800ºC. It has good relaxation resistance below 540°C, as well as good formability and welding performance. This alloy is mainly used to manufacture plane springs and coil springs that require high strength and resistance to relaxation that work under 800°C for aero engines. It can also be used to manufacture gas turbine blades and other parts. The available varieties include plates, strips, bars, forgings, ring parts, wires and pipes.

Similar grades:
Inconel X-750 (USA), NiCr15Fe7TiAl (Germany), NC15FeTNbA (France), NCF750 (Japan)

Chemical element content (%)
      C             Cr          Ni+Co       Al                 Ti                Fe            Nb+Ta
   ≤0.08   14.0~17.0    ≥70.0   0.40~1.00   2.25~2.75   5.00~9.00    0.70~1.20

   Co        Mn         Si          S         Cu          P
≤1.00     ≤1.00   ≤0.50   ≤0.010   ≤0.50   ≤0.015

Physical and chemical properties

1. Density 8.25g/cm³:
2. Melting temperature: 1395~1425ºC