No, the turbine blades are made from inconel, primarily a nickle based super alloy and a cast iron Hillary to work with in the machining end of things. Those things are tested in QC seven ways to Sunday before they ever see the inside of a turbine. Each batch is so stringent in their testing I doubt anyone would rely on a non-domestic source like China for their material for this exact reason.
I think that people really forget exactly the billions of miles we put on those things and just how much force is being contained and directed there, the speed of those things. We take it for granted that they will always be functioning without a hickup, and sometimes things like this just happen and we never really know what caused the failure.
Thank you, very good input.
But compare with #12.
They have cast iron Hillary’s in them?