cujet
Well-known member
Just an FYI, the idea that a mildly bent frame can't be straightened is wildly in error.
How do you think they formed the steel in the first place? Yup, they bent, crunched, and folded it into shape. That's the beauty of steel, it's flipping strong and durable just as it is.
The frame is made from Low carbon, high strength steel which comes on large rolls, is cut to length, stamped with a hydraulic press and die, welded into an assembly, surface treated to clean it, coated for corrosion protection and some form of quality control happens. That's it. No magic, no heating to 1400ºF, for annealing, tempering, hardening or normalizing.
It can be bent back into shape if not destroyed, can be welded, can be sanded, painted, and used without risk of fatigue if not loaded beyond its specs. Forever.
EDIT: I also wanted to add that the F150's frame steel is about 70ksi, (the steel has 70,000 pounds per square inch tensile strength) which is higher than mild steel (50ksi) and lower than ultra high strength frame steel at 100ksi (used for unique applications, like mining trucks)
Connecting rod bolts are typically 175ksi steel, for example. My point is that Ford's frame material is generic common steel, with all the properties that allow it to be worked into shape and welded without issue.
How do you think they formed the steel in the first place? Yup, they bent, crunched, and folded it into shape. That's the beauty of steel, it's flipping strong and durable just as it is.
The frame is made from Low carbon, high strength steel which comes on large rolls, is cut to length, stamped with a hydraulic press and die, welded into an assembly, surface treated to clean it, coated for corrosion protection and some form of quality control happens. That's it. No magic, no heating to 1400ºF, for annealing, tempering, hardening or normalizing.
It can be bent back into shape if not destroyed, can be welded, can be sanded, painted, and used without risk of fatigue if not loaded beyond its specs. Forever.
EDIT: I also wanted to add that the F150's frame steel is about 70ksi, (the steel has 70,000 pounds per square inch tensile strength) which is higher than mild steel (50ksi) and lower than ultra high strength frame steel at 100ksi (used for unique applications, like mining trucks)
Connecting rod bolts are typically 175ksi steel, for example. My point is that Ford's frame material is generic common steel, with all the properties that allow it to be worked into shape and welded without issue.
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