Technology

I mean, to be fair no one will be able to beat geely over the next decade.

You don't buff these things. You have to regrain them by rubbing an abrasive material across the panels in one direction same as a DeLorean.

What word is supposed to be censored there.

Tesla uses SS301 stainless. DeLorean used SS304.

301 is cheaper, less resistant to corrosion, can resist more force applied to it before failure, formes better in stamping, doesn't tolerate high-temperatures as well.

My guess is they used 301 due to cost and forming properties. Supposedly they use 301 on the Starships, so bulk pricing would help keep production costs low. Had they used 304 the raw material cost and cost of production at volume would be higher but they would be less likely to have these corrosion issues, assuming they aren't welding the panels.

Paint, they always need paint. A lot of science went into that. https://www.youtube.com/watch?v=b_hgPinCZks

Even "good quality" stainless steel can easily rust, as anyone who's owned quality kitchen knives will tell you. Some stainless alloys are more resistant than others -- but exposed to the right conditions they all corrode.

Lmaooo

One of the replies in that thread:

I’m know I’m a weirdo but I actually kinda like the corrosion and hopefully the associated patina that will come with it.

Wow.

Holy shit that's not insignificant! Those things are going to be piles of rust in just a few years.

Insane

Theres no such thing as "real stainless". Stainless steel 304 is corrosion resistant, it's the cheapest and most common. 316 is better at corrosion resistance and is "marine grade" since it will hold up better to salt water. 316L is some of the best at resisting corrosion, it's more expensive than 304 and is used in lab and surgical equipment. There are a lot of other types, like 309 for higher heat applications, etc.

Cybertruck is probably made from 304.

Definately not supprised that cybertrucks are having this issue. Especially with road salt in the winter. I'm sure the engineers at Tesla saw this coming too.

There are a lot of grades of stainless, but they all can rust. What you're doing with your kettles is unlikely to cause rust, because you are actively cleaning them daily. Letting a contaminant sit on them and periodically get wet without being cleaned our dried is a worst case scenario, and also what constantly happens to cars.

https://www.unifiedalloys.com/blog/stainless-grades-families

I am not an expert - just an avid knife freak - but in my experience "Stainless" means "Stain Less" not "Stain Resistent". Eg. s35vn is relatively high quality stainless knife steel - that does not mean it ain't gonna pickup stains - all mine did... I suspect one of the differences between my knifes / Elons Cybertruck vs. your cookware is that your cookware is mirror polished while my knives and the cybertruck are sporting "satin finish" which looks quite esthetically first 5 mnts - but is quite inpractical...

What makes stainless steel stainless is that it corrodes quickly, uniformly and forms a dense rich en Cr carbide coating (I dont know how it is called in english). This reduces the rate at which it corrodes enormously. This is the same on most "corrosion resistant" metals and alloys, like aluminium, titanium and zirconium.

There are multiple grades of SS, some of them are better at halting corrosion than others. And given the right environment (chemical + temperature) it will ultimately corrode.

Some geometrical obstacles* can produce other, more localized, types of corrosion... again, sorry, I dont know the technical words in english.