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Old 02-23-2013, 12:12 AM   #1
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Default Mild vs Aluminized steel for exhaust piping?

I know there's a butt load of welders/fabricators/metal workers here.

Like the title says: starting to order piping for exhaust, and before used mild with no issues (in CA there's no such thing as rust, so stainless is unnecessary).
Noticed that aluminized is cheaper, and looks like its less corrosive too or something like that. Only downside I saw was that it was a bit more challenging to weld, but not impossible or too hard.

Is there any reason why I shouldn't order aluminized over regular 18 or 16 gauge mild?

Thanks
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Old 02-23-2013, 01:09 AM   #2
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I used aluminized on my V8 car. Figured, it's cheaper and I gain some corrosion resistance, why not? There is a rusty band starting around each weld where the aluminum burned off but whatevs, it's better than the whole thing getting rusty.
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Old 02-23-2013, 01:14 AM   #3
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so you had no issues with it really? I mean fabricating, welding, etc. It was just like mild?
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Old 02-23-2013, 02:18 AM   #4
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It will weld just fine if you are using a mig welder. On that note, NEVER WELD GALVANIZED steel, the zinc fumes will give you a bad cold with flu like symptoms.

So aluminized ftw for cheapness will weld just fine with mig, finicky with tig.
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Old 02-23-2013, 04:35 AM   #5
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Yeh it is finicky to tig, however where all your welds are whether you use SS filler or not wont be rust proofed so whats the point.

however if its cheaper go for it.

Dann
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Old 02-23-2013, 07:56 PM   #6
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awesome thanks guys
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Old 02-23-2013, 08:11 PM   #7
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I built my exhaust out of aluminized. All done with MIG.

Also Paint over the welds. I like this stuff because it's cheap.

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Old 02-23-2013, 08:45 PM   #8
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Yeh that way it rusts only from the inside out not both ways and meets in the middle in half the time.

Dann
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Old 02-23-2013, 08:48 PM   #9
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I'm in northern CA. No rust. Ever.

But I do have a bunch of that rustoleum stuff so I'll use it.
Ordered the piping.


Thanks

Last edited by 18psi; 02-23-2013 at 09:05 PM.
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Old 02-24-2013, 12:59 AM   #10
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The slightly acidic water that will rest in your exhaust every night will rust it no matter where you live.

Dann
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Old 02-24-2013, 01:04 AM   #11
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Quote:
Originally Posted by nitrodann View Post
The slightly acidic water that will rest in your exhaust every night will rust it no matter where you live.

Dann
But Vlad never keeps his cars long enough for that so it doesn't matter.
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Old 02-24-2013, 02:00 AM   #12
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Quote:
Originally Posted by 18psi View Post
so you had no issues with it really? I mean fabricating, welding, etc. It was just like mild?
Sorry I'm late. No issues, I TIG welded it.
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Old 02-24-2013, 12:56 PM   #13
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my CA mild steel pipes rusted right next to my aluminized that did not rust. both were fine to weld if the joints are clean (scotch brite).
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Old 02-24-2013, 01:17 PM   #14
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I built all my DIY exhaust stuff out of Aluminized. No problem welding it, even for an inexperienced fabricator like myself. Even welded some aluminized to the stainless resonator, still no issues.
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Old 02-25-2013, 02:17 PM   #15
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well that's really good to know. and considering I paid half price for it (summit racing) vs what the local rip-off shops wanted for regular 18gauge mild, I'm pretty happy.
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Old 02-25-2013, 03:26 PM   #16
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[QUOTE=18psi;982908 considering I paid half price for it (summit racing) vs what the local rip-off shops wanted for regular 18gauge mild, I'm pretty happy.[/QUOTE]

Cheaper than www.mandrelbends.com? That's who I used last time. Didn't even think to check Summit. SAAB will need DP/exhaust soon.
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Old 02-25-2013, 03:33 PM   #17
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Looks like mandrelbends.com is no more.

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Old 02-25-2013, 03:41 PM   #18
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bummer, they were good to deal with in the past.
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Old 02-25-2013, 03:44 PM   #19
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Old 02-25-2013, 03:47 PM   #20
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or that
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