Tempered aluminum, like the 5052-T6 we used at work has low corrosive additives to get the strength in thin, lightweight aluminum....or any metal for that matter. These materials like Nickel to name one are highly resistant to corrosion. A beer/pop can is an example of a tempered aluminum.....but, like beer cans, if you get then thin enough and enough force, you can tear them.
Other thing is that aluminum is "Alodined" on aircraft to prevent corrosion......it's the olive drab look you see on fuselages of aircraft ag Boeing (to name one) as they go through the assy line prior to painting. Alodine is a deliberate corrosive process (dip, spray, or brush on) where the surface of the material is "surface corroded" thus protecting the inner components......think of a "skin rust" on a steel fence pipe. Down here we build steel pipe fence and leave it be letting it deliberately develop this nice, uniform brown color that lasts for decades. The DFW airport has steel railings all over the place and they are surface rusting too....neat. Nature does the painting and you never have to comeback and chip, scrape, sand, prime, and repaint.....whadda deal!!!
No I don't drive a Ford. My truck is a 2011 Silverado 1500 4 door, 4 sp. 4.8L simple pushrod engine. Goes to the dealer's shop every year.....not to get fixed as it doesn't break.....to get the state safety smog inspection.....and it passes every time. Every time the owner comes out, looking it over as he tries to sell me a new one......I want this one.
Last I was surfing a day or two ago and I think I picked up some chit chat that GM had aluminum on "hinged" panels....doors, tailgates, and hoods I suppose on recently built vehicles...maybe only trucks, and do not know yearmodels.
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Today's Featured Article - History of the Nuffield Tractor - by Anthony West. The Nuffield tractor story started in early 1945. The British government still reeling from the effects of the war on the economy, approached the Nuffield organization to see if they would design and build an "ALL NEW" British built wheeled tractor, suitable for both British and world farming.
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