GH2135 is a Fe-Ni-Cr-based precipitation hardening wrought superalloy, and the operating temperature range is below 700ºC. The alloy is added with elements such as aluminum and titanium to form an aging precipitation strengthening phase, and chromium, tungsten and molybdenum are added for solid solution strengthening. The alloy has the characteristics of good low-cycle fatigue resistance, yield strength at 700 degrees Celsius that increases with temperature, and good hot working plasticity. GH2135 is used to make turbines, discs and thermoforming molds working at 750-850 degrees Celsius. Such as forging hammers and hot stamping dies.
Chemical composition of GH2135:
Carbon C: ≤0.08
Chromium Cr: 14.00~16.0
Nickel Ni: 33.00~36.0
Tungsten W: 1.7~2.20
Molybdenum Mo: 1.7~2.20
Aluminum Al: 2.0~2.8
Titanium Ti: 2.10~2.50
Iron Fe: excess
Boron B: ≤0.015
Silicon Si: ≤0.50
Manganese Mn: ≤0.40
Phosphorus P: ≤0.020
Sulfur S: ≤0.020
Ce: ≤0.03
Mechanical properties
Conditional yield strength σ0.2 (mpa)---
Elongation δ5 (%)15
Area shrinkage ψ (%)20
Hardness (hb)/mm (pressure d) 3.25-3.65
Heat treatment system 1080±10ºC, air cooling 830±10ºC 8h, air cooling 700±10ºC 16h, air cooling
Metallographic structure of age-hardening iron-based alloys
Density: 7.92g/m3
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