Quote:
Originally Posted by Too Stroked
The type of steel used in the construction of the frame has little to do with the corrosion problem. Having worked in the metal finishing business for more than a few years, I can tell you for certain that the root cause is the finishing (painting in this case) process.
As for Corten steel, you are 100% incorrect to assume that's what the frames are made of. Not even close in fact. Here's what Corten is:
What is Corten Steel? | Corten.com | Distributor of Corten Steel
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Thanks for this. IIRC, the basis of the lawsuit against Toyota was that the frames were not effectively coated with anticorrosion material. That's the issue, not the metal. Another unfortunate example of such an error is inside the tailgate, where they applied sound-deadening before the corrosion protection, allowing moisture to get trapped underneath and cause rust, visible as the notorious paint bubbles below the license plate area of the hatch.