Hi there,
This is Bogdan from Romania.
I'm a mechanical engineer, specialized in the industrial robotics, 3D modeler and designer.
I have over 15 years work experience, designing, prototyping and launching different devices/systems across multiple industries.
I could help with your project, but I really need more details/info about.
The things are a little more complicated than you believe...
If the deformation is quite larger, than is tricky to deform galvanized metal sheet so the best solution is ss
Also there are different other factors which should take under consideration - the thickness of the sheet, curvatures, shrinking, etc, etc
When you'll share more info, I would be able to give you more details.
For any other questions, you may open a chat room here and we'll discuss about the details.
Regards
Bogdan