GTD 222(Ni-Cr-Co-W-Ta-Nb)

1. Introduce – Cast nickel-based alloy used in onshore gas turbine engines – Introduced to replace the cobalt-based alloy FSX-414 as the second and third stage nozzle material in gas turbines – Developed to replace GTD 111 – Maintains excellent mechanical properties up to 760°C through precipitation hardening and solid solution strengthening * GTD 222 vs FSX-414 tensile strength, creep-rupture properties – FSX-414 gas turbine nozzle: frequent maintenance required due to creep deflection caused by high combustion temperature – GTD 222 : Material with improved...