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Old 08-26-2015, 06:19 PM   #11
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Why cold rolled vs hot rolled, Aaron?
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Old 08-26-2015, 11:37 PM   #12
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Wish I could find cold rolled around here. No scale to have to grind off.
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Old 08-26-2015, 11:39 PM   #13
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Why cold rolled vs hot rolled, Aaron?

Hot Rolled vs Cold Rolled Steel
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Old 08-26-2015, 11:49 PM   #14
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Excellent info. I would add that if you intend on welding & or painting hot rolled steel...the scale needs to be removed. A RPITA process I have been doing on every piece I have been fabbing for three years now. The "scale" on the surface is essentially compressed oxidation and is not what you want in a weld joint or under a paint job.

Muriatic acid is the quickest way to clean it down to actual metal but is really nasty stuff to deal with. And since the scale is a little harder than the underlying steel, it is major chore to try and grind off without gouging and scarfing up the surface.

Like I said...I WISH I could find a cold rolled source around here...that I could afford.
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Old 08-26-2015, 11:57 PM   #15
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Like tango said, the mill scale is a pita. On the other ha d mill scale when left untreated or painted seems to rust slower too. I guess it depends on the project. Farm gate? Hot roll probably. Some sort of vehicle or technical thing? I usually go cold roll or strip all mill scale first since I'll probably paint or powdercoat it anyway.

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Why cold rolled vs hot rolled, Aaron?
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Old 08-27-2015, 01:18 AM   #16
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All my interior framing will be done with 16 ga custom formed pieces, made to my specs.

I will be using galvanized so I don't have to paint every piece.

Galvanized is only 10 cents more per pound from my supplier. I can't come close to painting the metal for that cost.

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Old 08-27-2015, 01:26 AM   #17
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I know the difference.
Cold rolled is way overkill. But it AINT my money.
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Old 08-27-2015, 03:33 AM   #18
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The metal supplier I use in Kent, Washington is selling me 1" x1" x.0625x20' lengths of cold roll for $16 each, which is super affordable in my book. I was buying about 200 feet at a time though.

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I know the difference.
Cold rolled is way overkill. But it AINT my money.
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Old 08-27-2015, 02:47 PM   #19
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You can also purchase metal studs in 2 1/2 in withs
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