3mm stainless steel - wow

[Rutrow]

Well, I sure like two US quarters stacked as opposed to two measley pennies. I'm not about to let something as insignificant as the to truth get in the way, either.

How about a quarter and a dime?
35¢ is better than 2¢

Just my two cents ??‍

Sponsored

 

[Rutrow]

That door panel looks to me like a rolled edge. If it's rolled edge capturing the door inside panel (like every car door I've ever seen) a 3mm material would add at least 6mm to the thickness of the inside panel it was folded around. A 1.5mm interior panel, plus a bit of tolerance would be close to 8mm thick edge. That's thicker than a stack of SIX DIMES!!! ?

 

[CyberGus]

That door panel looks to me like a rolled edge. If it's rolled edge capturing the door inside panel (like every car door I've ever seen) a 3mm material would add at least 6mm to the thickness of the inside panel it was folded around. A 1.5mm interior panel, plus a bit of tolerance would be close to 8mm thick edge. That's thicker than a stack of SIX DIMES!!! ?

A rolled edge on 3mm steel would be an engineering challenge.

 

[Mini2nut]

The door edge in the photo doesn’t appear to be super thick.

Tesla may be attaching the outer door skin to the stamped inner door structure with an industrial adhesive instead of using a traditional automated door hemming procedure.

Virtually all OEM’s have a machine that hems the outer door skin to the inner door structure to hold it in place. I posted an older video below to help visualize the procedure.

The driver side door skin appears to be pretty thick. Tesla specifications or a Cybertruck tear down will reveal the exact thickness.

Hemming an outer door skin to the inner door structure. The process can be seen on a Subaru starting around the 2:30 mark.

 

[TyPope]

The door edge in the photo doesn’t appear to be super thick.

Tesla might be attaching the door skin to the stamped inner door structure with an industrial adhesive.

Virtually all OEM’s have a machine that folds the edges of the outer door skin over the inner door structure to hold it in place.

The driver side door skin appears to be pretty thick

It doesn't look like Tesla is folding over the edge. I hope their adhesive knowhow is strong! (I know it is)

 

[Crissa]

I would much prefer a roof of 3mm cold-rolled stainless steel instead of even armor glass roof.

We've had this conversation before, but...

...You do know that the glass is technically harder than the steel, right?

-Crissa

 

[Crissa]

My best guess…

https://www.teslarati.com/tesla-cybertruck-steel-plant-production-next-month/

Correction: A message sent to Teslarati has confirmed that Steel Dynamics Inc. is not Tesla’s supplier for the Cybertruck’s steel. With regards to the Cybertruck’s supply chain, Steel Dynamics will aspire to work towards becoming an approved supplier to Tesla.

Found this: https://www.cybertruckownersclub.co...-for-cybertruck-same-as-spacex-starship.5742/

from Ogre's post on page 3 of that thread
https://www.cybertruckownersclub.co...ybertruck-same-as-spacex-starship.5742/page-3

So no, Steel Dynamics isn't the source, as far as we know. It's another foundry in I think Alabama or Mississippi, but with all the wrong answers on the internet, hard to find the right one.

-Crissa

 

[Delusional]

I've been calling for someone to do the coin test for three years.
I'm tired of speculation.
Call me after someone has done the coin test on an actual vehicle.

 

[Rutrow]

A rolled edge on 3mm steel would be an engineering challenge.

Yeah, that's why I was poo pooing the idea. I doesn't make sense.

 

[cvalue13]

Doors?!

What about quarterpanels?

as these are betas there’s nothing confirming they have production parts on them

that caveat aside:

 

[CT19TX]

First post here, long time lurker. I don't really like to speculate but will comment where I feel my experience is valid. 3mm is 11ga steel, a product of coil. The majority of automobile frames are made from 11ga, skins are between 18-22ga closer to 20ga if I had to bet. For the Cybertruck skins to be completely made of 11ga would be absurd, in my opinion. I think as with most of all the first intentions of the 2019 concept, the majority has been taken down a notch, no pun intended. The coil itself would need to be processed through a stretcher/leveler as well as cut to length. Not sure if Giga TX has this capability or not. It would be fairly easy to spot coils rolling in on a drone video though and if they want to truly vertically integrate then this would be necessary. I'm not fluent on the auto processing side. Steel Dynamics only produces the steel, they have an onsite processor for any type of cut to length or leveling needed though. As far as grade, 304 would be acceptable 316 would be better but not lightyears apart, from a cost perspective 304 would work best. A low carbon restriction(L) wouldn't be needed as this is mainly used for high heat applications, welding, etc. to reduce corrosion issues but most 304 is ordered "dual certified" to 304L because it meets the specification when produced. You see this a lot in carbon steel products when ordered to a certain grade then the chemicals and/or mechanicals meet another specification within the grade and you can have the mill re-certify to multiple specifications. I have a contact at SDI (Steel Dynamics) I can ask tomorrow if they are handling Tesla still or not. I doubt a "special" steel would be manufactured specifically for the Cybertruck, but from a marketing standpoint you never know. Highly unlikely still.

 

[JBee]

We've had this conversation before, but...

...You do know that the glass is technically harder than the steel, right?

-Crissa

Harder is not stronger.

 

[firsttruck]

At 2019 Nov Cybertruck on stage demo
2 tests by Franz with large hammer vs same door panel 3mm cold-rolled 30x stainless steel.
all tests passed with no dents in 3mm cold-rolled 30x stainless steel.

2 tests by Franz & team steel ball vs two different armor glass windows mounted in Cybertruck.
Both tests had extensive cracking of armor glass.

TESLA CYBERTRUCK LIVE Launch Event
** cued to 7:14 - hammer vs door


-----

** cued to 13:10 - steel ball vs door window


--------------------------

We've had this conversation before, but...

...You do know that the glass is technically harder than the steel, right?
-Crissa

Not just steel but for example 3mm cold-rolled 304L stainless steel?

The armor glass must not crack before 3mm cold-rolled 304L stainless steel shows significant dent.

What data shows 2 meter x 2 meter piece armor glass of similar weight and cost (adjust glass thickness as needed to get similar weight & cost) to 2 meter x 2 meter piece of 3mm cold-rolled 304L stainless steel, in several tests that when both are hit by a 10cm steel ball at same speed that the armor glass will not crack before the 3mm cold-rolled 304L stainless steel shows significant dent.

How often will the armor glass not crack until after the 3mm cold-rolled 304L stainless steel shows significant dent?

 

[charliemagpie]

The front corner of an out of control shopping trolley smashes into the side of the Cybertruck.

Will it leave a dent ?

 

[Mini2nut]

My prediction? 3mm thickness for doors, quarter panels and tailgate. Thinner gauge SS for frunk hood, fenders and front valance.

Sponsored