Cyberman

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So I ordered a piece of 5"x5"x3mm SS online, so I can see just what the CT skin/exo is going to look like, here it is. It's 304 stainless. This is definitely thicker than a quarter. Feels awesome in my hand. Kind of like having a piece of Cybertruck with me already. I'll take it.

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tmeyer3

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I want one! How much? Where'd you but it?
 

android04

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I also have a piece with the exact same dimensions and the same 304 SS, but I bought mine off of Amazon for around $18. I'd post the link, but it's not available anymore (I bought it on November 25th, 2019). I'm sure one can probably find a similar piece from another vendor on Amazon or buy it from the eBay link shared by Cyberman.
 

ricinro

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The Tesla 30x SS is probably much closer to 304 than 316 and will be work hardened (Squeezed through rollers). It is likely that the hardness will be "half hard" as this is about the maximum hardness obtainable for 304.

This brings up an interesting topic IMO. Will the mill ship annealed SS on rolls and then Tesla will work-hardened into larger flat sheets at the factory?

300 series SS is typically annealed meaning it is softened for better forming and machining and is what is shown in the previous posts

https://www.makeitfrom.com/material-properties/Half-Hard-304-Stainless-Steel
 

Klaxon

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It is useless to argue now what steel is used by Space X/Tesla.
But if I would design the spacecraft, I would definitely prefer much stronger 316. I did work with both, including manual filing of the complex shapes.
Tesla could order even stronger custom steel with higher content of titanium, molybdenum, or tungsten.
After all they need max heat resistance.
 
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LDRHAWKE

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With the totally redesigned cast substructure and battery pack, I would not be surprised if the upper stainless steel body is made lighter with a reduced metal thickness in many areas.
 

myco.rrhizae

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Keep in mind that ct steel will be cold rolled, which is a much higher quality steel. note the difference between the rule on a starret combination sqaure vs your standard, cheaper combo square rule
 
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