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Old 24-01-2020, 10:49 PM   #1
fuzzybear1981
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Default Sheet thickness

Looking to buy some sheet metal to fabricate panels.... what’s recommended 1.0mm or 1.2mm
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Old 24-01-2020, 11:31 PM   #2
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[IMG][/IMG]I think you will find stock thickness for body panels is 0.8mm.

I used 1 mm for my body panels on my fastback, as that was the only thing available You might find 1.2mm panel material a bit to stiff if you have to form any curved elements.

And i used 1.5mm galvanised material for the heater channels, but they only required folding at various 90 degree to form the box.

These 2 panels 1mm


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Old 25-01-2020, 08:51 AM   #3
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Stock panel thickness is 0.8mm. I use bright zinc plated sheet that comes in 0.9mm. It just adds an extra element of rust protection and means it can sit around in your shed for ages without rusting. Well rusting badly.

Any kind of compound curve will become increasingly more difficult to form the thicker the sheet you use.
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Old 25-01-2020, 10:04 AM   #4
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I was under the impression you couldn’t mig weld zinc coat or is that galv I’m getting confused with?
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Old 25-01-2020, 10:50 AM   #5
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I believe it is possible to weld both but welding galvanised steel is a "no no" because of the fumes given off being toxic - long time ago when I was told this as an apprentice so could be wrong!!
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Old 25-01-2020, 11:22 AM   #6
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Obviously when welding any material, proper safety protection is a must, including the appropriate welding respirator,

http://www.sperkoengineering.com/htm...Galvanized.pdf

https://www.eweld.com.au/blogs/news/...lvanised-steel

http://multimedia.3m.com/mws/media/1...tion-guide.pdf

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Old 25-01-2020, 11:42 AM   #7
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This fastback wing corner was hammer formed from 1.mm material



Inner wing view,



End view,



It would have been extremely difficult, if not impossible if the material was 1.2mm
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Old 25-01-2020, 03:30 PM   #8
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Quote:
Originally Posted by 2much View Post
I believe it is possible to weld both but welding galvanised steel is a "no no" because of the fumes given off being toxic - long time ago when I was told this as an apprentice so could be wrong!!
Yeah I learned this a few years ago. If you knew how much galv I welded in my youth before knowing this

I'm also uniquely qualified at welding underseal!
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Old 25-01-2020, 11:38 PM   #9
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You will find 1.2mm quite hard going...
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Old 29-01-2020, 07:52 AM   #10
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Galvanised steel is zinc plated but just uses a different method to coat the steel IIRC.

And yes, wear a respirator otherwise you end up with welders flu like I did and took me a while to figure this out.
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