possibly a bad brake...you should get all brakes done
Power Steering pump my have a leak...
metal, right? Sounds like metal, yes.
Power Steering Fluid Or Power Steering Pump
The cause of the squealing sound is because you are turning the steering wheel completely to the right or left
Turning the steering wheel farthest left or right for a few seconds will cause a loud squealing.
If its front wheel drive possibly an axle.
Right off the top of my head, I suspect that your accessory drive belt is either too loose or it is worn and 'glazed' and probably needs replacing.
Power steering belt slipping?
c/v axle is bad if its front wheel drive
might be your power steering or something in that nature
Seized or damaged half shaft (drive shaft) joint Usually this is a U joint type joint, but not always
Without seeing it , I will tell you that most of the time wheel noise that happens when you turn the wheel is due to a CV axle that is failing. Test is this way: go into a large vacant parking lot and turn the wheels to the right and go in reverse; is the noise worse? It may be if the joint is bad.Usually a wheel bearing will make a low growling noise; but you called it a squealing noise. I hope this helps a little.