I can't find anything more than hearsay about this, but I've now encountered the idea several times that Tesla chose or developed an unusual alloy to mitigate oilcanning, a phenomenon where large, flat pieces of sheet metal tend to cup or bow.
> According to matmatch.com, “The Cybertruck exoskeleton is made from Tesla’s own stainless steel alloy, referred to as the Ultra-hard 30X Cold-rolled Stainless Steel. While the blend is proprietary, Elon mentioned during the product launch that the exoskeleton material of the vehicle is the same as the SpaceX Starship shell.”
There are many different stainless alloys. The ones that don't rust make for terrible knifes - it isn't possible to get them sharp. Of course if this is a butter knife you don't need much an edge and so they might be sharp enough.
I wouldn't be surprised if the rust resistant stainless alloys have other properties that are not desireable in a truck.
You can get just about anything decently hard to be sharp, any stainless can be sharpened. I've sharpened Teflon enough to cut paper before. Getting it to stay sharp is the hard part.
>The ones that don't rust make for terrible knifes
LC200N and Vanax are steels that are used on corrosive resistant knives, and they make great blades. Magnacut is a newer steel that also displays very good corrosion resistance and has very good knife qualities.
Wonder if tesla is using 304, or have cheeped out with 430. If it's pitting already, makes me think it's the cheaper option.