3 ms·

If you buy higher quality stainless steel (18/10, or 304), those spots don't form, or take many more years to show up. Wonder if tesla is using 304, or have ch

If you buy higher quality stainless steel (18/10, or 304), those spots don't form, or take many more years to show up. 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.

AlexandrB 3y ago
They claim to have developed their own alloy. > 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.” [1] https://www.worldautosteel.org/why-steel/steel-muscle-in-new-vehicles/tesla-cybertruck/ https://www.worldautosteel.org/why-steel/steel-muscle-in-new...
- nixass 3y ago
  I read whole paragraph as "yeah, cheap"
- westbywest 3y ago
  Good thing the 304L (etc) comprising Starship's shell won't be subjected to repeated heatings. https://app.aws.org/forum/topic_show.pl?tid=7585 https://app.aws.org/forum/topic_show.pl?tid=7585
- HumblyTossed 3y ago
  > is the same as the SpaceX Starship shell No wonder it's rusting, they're recycling all the exploded Starship shells.
chociej 3y ago
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. Here's some anecdata that is probably the most coherent read I can find on the topic of Cybertruck oilcanning: http://livingstingy.blogspot.com/2023/08/dude-wheres-my-cybertruck.html http://livingstingy.blogspot.com/2023/08/dude-wheres-my-cybe... Seems the alloy is probably less rust resistant than more common alloys, and also can't take a clearcoat without losing some valuable properties? More hearsay: https://www.reddit.com/r/teslamotors/comments/197sivs/tesla_warns_that_cybertruck_needs_to_be_cleaned/ https://www.reddit.com/r/teslamotors/comments/197sivs/tesla_...
bluGill 3y ago
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.
- SAI_Peregrinus 3y ago
  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.
- turtlesdown11 3y ago
  >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.
mikae1 3y ago
> Wonder if tesla is using 304, or have cheeped out with 430. 301 according to post #50[1]. [1] https://www.cybertruckownersclub.com/forum/threads/rust-spots-corrosion-is-the-norm.11988/post-241032 https://www.cybertruckownersclub.com/forum/threads/rust-spot...

AlexandrB 3y ago

They claim to have developed their own alloy. > 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.” [1] https://www.worldautosteel.org/why-steel/steel-muscle-in-new-vehicles/tesla-cybertruck/ https://www.worldautosteel.org/why-steel/steel-muscle-in-new...

nixass 3y ago
I read whole paragraph as "yeah, cheap"
westbywest 3y ago
Good thing the 304L (etc) comprising Starship's shell won't be subjected to repeated heatings. https://app.aws.org/forum/topic_show.pl?tid=7585 https://app.aws.org/forum/topic_show.pl?tid=7585
HumblyTossed 3y ago
> is the same as the SpaceX Starship shell No wonder it's rusting, they're recycling all the exploded Starship shells.

chociej 3y ago

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. Here's some anecdata that is probably the most coherent read I can find on the topic of Cybertruck oilcanning: http://livingstingy.blogspot.com/2023/08/dude-wheres-my-cybertruck.html http://livingstingy.blogspot.com/2023/08/dude-wheres-my-cybe... Seems the alloy is probably less rust resistant than more common alloys, and also can't take a clearcoat without losing some valuable properties? More hearsay: https://www.reddit.com/r/teslamotors/comments/197sivs/tesla_warns_that_cybertruck_needs_to_be_cleaned/ https://www.reddit.com/r/teslamotors/comments/197sivs/tesla_...

bluGill 3y ago

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.

SAI_Peregrinus 3y ago
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.
turtlesdown11 3y ago
>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.

mikae1 3y ago

> Wonder if tesla is using 304, or have cheeped out with 430. 301 according to post #50[1]. [1] https://www.cybertruckownersclub.com/forum/threads/rust-spots-corrosion-is-the-norm.11988/post-241032 https://www.cybertruckownersclub.com/forum/threads/rust-spot...