For reference, 50000lbs is 22 tons. Tesla is now using 6000 and 8000 ton casting machines to build the Model Y and Cybertruck chassis. And they come from Europe again!
But this is a great opportunity to observe some of the engineering challenges with these advanced manufacturing techniques.
Tesla Model S and X were constructed with alloy control arms (Tesla calls them 'fore links') which sometimes did not meet specifications, resulting in catastrophic failures[0] termed "Wompy Wheel" in the press.
I don't know if they are extruded or forged, I think they are extrusions but I haven't had a really close look. One thing that I've noticed about the failures is that the control arms have what appear to me to be unusually large rubber bushings. I don't know what conclusions can be drawn from that observation, but there it is. I would speculate that the largeish bushings provide improved ride quality. On another note, Tesla wheels were kind of weirdly large, with uncommon tire specs.
I've had the opportunity to examine some more resent Tesla suspension components and they appear quite resilient. However, YMMV, I am not an X-Ray.
[0] https://www.motorbiscuit.com/this-is-bad-whompy-wheel-syndro...