FEA on Custom Heater Return Bends

I need a finite-element stress check on a 180° return bend that will sit inside a direct-fired heater coil. This return bend is built by butt-welding two 90° wrought elbows made of 347AP stainless steel... (Budget: $3000 - $5000 USD, Jobs: Abaqus, Ansys, Engineering, Engineering Drawing, Finite Element Analysis, Mechanical Design, Mechanical Engineering, Simulation, Solidworks, Structural Engineering)