3 ms·

Depends on the stainless alloy used. Meat grinders would be designed to stand up to salt - they use 304 or 316. Cybertruck's aren't, because they use a 301, whi

by elil17 3y ago

Depends on the stainless alloy used. Meat grinders would be designed to stand up to salt - they use 304 or 316. Cybertruck's aren't, because they use a 301, which is less corrosion resistant. Meanwhile, 316 will gladly rust if put in a strong enough salt solution for long enough.

arcticbull 3y ago
Why would a car body not be designed to stand up to salt? You know they put that stuff on roads right? Driving it in winter in much of these here United States (let alone Canada) is equivalent to bathing it in a saline solution and whipping salt nuggets at it. That would be quite the oversight.
- kube-system 3y ago
  All cars are "designed to stand up to salt", including the cybertruck, just in different ways. Most auto manufacturers use mild steels which are highly susceptible to rust, but mitigate rust by using various types of coatings. This has significant drawbacks because coatings can be compromised by wear, causing the underlying steel to fail to corrosion. As my engineering professor always said, if you're willing to spend a few million dollars on a car, you can get one that will last a lifetime!
  - elil17 3y ago
    >including the cybertruck Apparently not, though - it's obviously rusting
    - kube-system 3y ago
      Yes, including the cybertruck. Tesla chose 301 stainless to mitigate rust. It is not a perfect choice. Neither are coatings on mild steel. All cars are designed to resist corrosion but can and will under the right (wrong?) circumstances. There is no perfect material that does everything. All have pros-and-cons.
      - elil17 3y ago
        I believe it's clearly unacceptable for a car to visibly rust within a year of production. That would never happen with a regular car.
        kube-system 3y ago
        It does happen with other cars. At my last job, the guy in the cubical next to me had a brand new car that had rust issues fixed under warranty. And traditional automakers don't warranty rust until the hole goes entirely through the body panel (i.e. rust perforation). Drive most steel bodied cars behind a salt truck in the rust belt and you'll often get small cosmetic rust spots: https://www.reddit.com/r/GrandCherokee/comments/vboker/should_i_claim_corrosionrust_warranty_on_this_spot/ https://www.reddit.com/r/GrandCherokee/comments/vboker/shoul... Remember, most traditional automakers are using steel with little to no corrosion resistance at all, and are relying on fragile coatings to do the work instead. This is not without its own drawbacks. You might not hear much about these types of issues, because cosmetic issues with traditional brands normally don't make the news, but recalls due to safety concerns do: https://www.fox9.com/news/driving-in-the-salt-belt-millions-of-cars-with-rust-recalls https://www.fox9.com/news/driving-in-the-salt-belt-millions-... TL;DR: steel cars corrode.
        arcticbull 3y ago
        I think most body panels have been hot-dip galvanized electroplated then painted since the 80s instead of just exposed without even a clear coat. That should last at least 5-10 years even in the worst North American conditions before you see rust. Unless you imported yourself something low-end originally destined for India or China. The car you linked to on reddit was a 2018 Grand Cherokee, which is ~7 years old now (5 years old when posted), so it would be expected -- and something you can just touch up. Note that in the comments they suggested it might even be covered under the new-vehicle limited warranty had it occurred in the first 3 years. Which makes sense, I'd consider that to be a material defect within that period of the NVLW. Note that Tesla will sell you a cybertruck clear coat paint job for $5000. Probably a good investment.
- elil17 3y ago
  That's true, no other car company would build a car body that can't stand up to normal outdoor conditions. Perhaps there is a reason every other car in the world is painted...
- nullindividual 3y ago
  Ever watched Fargo[0]? If not, don't forget your Truecoat. [0] https://www.youtube.com/watch?v=B2LLB9CGfLs https://www.youtube.com/watch?v=B2LLB9CGfLs
jtriangle 3y ago
316L is better than all the above, and you can weld it. Also more expensive. I'd think for car body panels you'd want n50 or n60, but those are marine alloys, and they're spendy. It could also be that the material they're using isn't passivated well, in which case the fix is fairly simple (barkeepers friend and a buff wheel).

by elil17 3y ago

arcticbull 3y ago

Why would a car body not be designed to stand up to salt? You know they put that stuff on roads right? Driving it in winter in much of these here United States (let alone Canada) is equivalent to bathing it in a saline solution and whipping salt nuggets at it. That would be quite the oversight.

kube-system 3y ago
All cars are "designed to stand up to salt", including the cybertruck, just in different ways. Most auto manufacturers use mild steels which are highly susceptible to rust, but mitigate rust by using various types of coatings. This has significant drawbacks because coatings can be compromised by wear, causing the underlying steel to fail to corrosion. As my engineering professor always said, if you're willing to spend a few million dollars on a car, you can get one that will last a lifetime!
- elil17 3y ago
  >including the cybertruck Apparently not, though - it's obviously rusting
  - kube-system 3y ago
    Yes, including the cybertruck. Tesla chose 301 stainless to mitigate rust. It is not a perfect choice. Neither are coatings on mild steel. All cars are designed to resist corrosion but can and will under the right (wrong?) circumstances. There is no perfect material that does everything. All have pros-and-cons.
    - elil17 3y ago
      I believe it's clearly unacceptable for a car to visibly rust within a year of production. That would never happen with a regular car.
      - kube-system 3y ago
        It does happen with other cars. At my last job, the guy in the cubical next to me had a brand new car that had rust issues fixed under warranty. And traditional automakers don't warranty rust until the hole goes entirely through the body panel (i.e. rust perforation). Drive most steel bodied cars behind a salt truck in the rust belt and you'll often get small cosmetic rust spots: https://www.reddit.com/r/GrandCherokee/comments/vboker/should_i_claim_corrosionrust_warranty_on_this_spot/ https://www.reddit.com/r/GrandCherokee/comments/vboker/shoul... Remember, most traditional automakers are using steel with little to no corrosion resistance at all, and are relying on fragile coatings to do the work instead. This is not without its own drawbacks. You might not hear much about these types of issues, because cosmetic issues with traditional brands normally don't make the news, but recalls due to safety concerns do: https://www.fox9.com/news/driving-in-the-salt-belt-millions-of-cars-with-rust-recalls https://www.fox9.com/news/driving-in-the-salt-belt-millions-... TL;DR: steel cars corrode.
        arcticbull 3y ago
        I think most body panels have been hot-dip galvanized electroplated then painted since the 80s instead of just exposed without even a clear coat. That should last at least 5-10 years even in the worst North American conditions before you see rust. Unless you imported yourself something low-end originally destined for India or China. The car you linked to on reddit was a 2018 Grand Cherokee, which is ~7 years old now (5 years old when posted), so it would be expected -- and something you can just touch up. Note that in the comments they suggested it might even be covered under the new-vehicle limited warranty had it occurred in the first 3 years. Which makes sense, I'd consider that to be a material defect within that period of the NVLW. Note that Tesla will sell you a cybertruck clear coat paint job for $5000. Probably a good investment.
elil17 3y ago
That's true, no other car company would build a car body that can't stand up to normal outdoor conditions. Perhaps there is a reason every other car in the world is painted...
nullindividual 3y ago
Ever watched Fargo[0]? If not, don't forget your Truecoat. [0] https://www.youtube.com/watch?v=B2LLB9CGfLs https://www.youtube.com/watch?v=B2LLB9CGfLs

jtriangle 3y ago

316L is better than all the above, and you can weld it. Also more expensive. I'd think for car body panels you'd want n50 or n60, but those are marine alloys, and they're spendy. It could also be that the material they're using isn't passivated well, in which case the fix is fairly simple (barkeepers friend and a buff wheel).