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Author Topic: Sheet metal question - Galvanized?  (Read 2211 times)
69fourspd
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« on: May 01, 2006, 11:47:14 PM »

I need a little bit of sheet metal for my 69 charger, and would prefer to use a new straight piece instead of going to the junk yard to cut up a section of an old junker.  I have read 18 gauge, but haven't seen much about a new galvanized panel.  Here is a link to Eastwoods site.  http://www.eastwoodco.com/shopping/product/detailmain.jsp?itemType=PRODUCT&RS=1&itemID=10438&keyword=metal+repair+panels

Would the galvanized work out well?  Newer cars have galvanized parts right?  will this be a problem welding in? Any thoughts would be helpful. 

Thanks!
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Todd Wilson
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« Reply #1 on: May 01, 2006, 11:51:16 PM »

I am not a professional body guy but I would say no to the galvanzied.   2 reason................. #1  welding galvanized is dangerous. The coating will produce a toxic gas when burnt during the welding process. You breath it in and get sick.  I also wonder how well primers and paints would stick to galvanized metal. Would paint companies guarantee their products on the Galv. sheet metal.   Maybe one of the pro's here can fill us in more on this end of it.



Todd
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69fourspd
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« Reply #2 on: May 01, 2006, 11:55:49 PM »

Todd - Thanks for the reply and I agree with both.  I wondered the same thing about the paint adhesion and I also read sharpspikes post about the health risks.  http://www.dodgecharger.com/forum/index.php/topic,2929.0.html

I do like the fact that this board looks out for the members and not just their cars!
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Shakey
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« Reply #3 on: May 02, 2006, 05:53:35 AM »

I am not a professional body guy but I would say no to the galvanzied.   2 reason................. #1  welding galvanized is dangerous. The coating will produce a toxic gas when burnt during the welding process. You breath it in and get sick.  I also wonder how well primers and paints would stick to galvanized metal. Would paint companies guarantee their products on the Galv. sheet metal.   Maybe one of the pro's here can fill us in more on this end of it.



Todd


Also - once you mess with the galvanized finish, it leaves it prone to rust.
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AdamMopar
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« Reply #4 on: May 02, 2006, 06:08:31 AM »

I used galvanized sheets because that is about all I seem to be able to get.  Grind of the galvanized coating when I start making a patch.

Adam
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69fourspd
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« Reply #5 on: May 02, 2006, 09:27:40 AM »

I found a local body shop supply company who carries flat stock.  Seems like an easier solution than grinding/sanding the finish, ruining my lungs from welding...........  Wink

Thanks guys. 
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Blown70
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« Reply #6 on: May 02, 2006, 09:33:58 AM »

I found a local body shop supply company who carries flat stock.  Seems like an easier solution than grinding/sanding the finish, ruining my lungs from welding...........  Wink

Thanks guys. 



HEHEHEHE I got a 4x8 sheet free.  Most metal houses will let you buy.  Mine was 20 Ga....


Tom
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kab69440
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« Reply #7 on: May 02, 2006, 05:38:54 PM »

As long as the zinc is ground off anywhere you intend to weld, you will be OK. MiGs do not like zinc at all. It causes bubbles to form in the bead, which results in a weak joint.
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zagnut
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« Reply #8 on: May 02, 2006, 08:58:31 PM »

I am a autobody tech and useing galvanized sheet metal is fine . todays cars are all galvanized steal ,IT has properties to make the steel last longer and corode less. As far as welding it, a mask should be worn but i never wear one and iv been welding for 20 years.
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Daytona R/T SE
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« Reply #9 on: May 02, 2006, 10:50:17 PM »

I need a little bit of sheet metal for my 69 charger, and would prefer to use a new straight piece instead of going to the junk yard to cut up a section of an old junker.  I have read 18 gauge, but haven't seen much about a new galvanized panel.  Here is a link to Eastwoods site.  http://www.eastwoodco.com/shopping/product/detailmain.jsp?itemType=PRODUCT&RS=1&itemID=10438&keyword=metal+repair+panels

Would the galvanized work out well?  Newer cars have galvanized parts right?  will this be a problem welding in? Any thoughts would be helpful. 

Thanks!

I would NOT use the galvanized steel for a patch panel - It's toxic, ( the guys at work wear helmets with an outside air supply when they weld it) it's harder to weld, tougher to paint, overall you're just making things harder for yourself. I use 18 gauge cold rolled steel when I make a patch panel, I've also used 20 gauge CRS several times, it's just a little thinner.

Go to your local (non heating A/C) sheet metal shop and ask for some 18 and 20 gauge crs off-fall, where I work we usually just give it away if the person only wants a few small pieces, hell our scrap dumpsters are over-flowing with the stuff Roll Eyes
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mopar_madman
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« Reply #10 on: May 06, 2006, 07:48:47 AM »

Most hardware stores by me carry flat sheet metal in various gauges. Menards, Sears Hardware and Home Depot have it.
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