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Old 09-11-2020, 12:30 PM   #1
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Mobile Rail Bunkhouse
Farmington , MO
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Will 2024-T3 aluminum match 7075-T6 for exterior skin?

The existing exterior skins on our bunkhouse are Kaiser 7075-T6 QQA-223 alloy (and I have no idea what that means).

Will 2024-T3 match it? I need to reskin the door, move a window and make a few dozen patches.
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Old 09-11-2020, 12:32 PM   #2
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Wicks Aircraft also sells 7075-T6 so maybe that's the better option?
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Old 09-20-2020, 06:19 PM   #3
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I've only seen one other trailer skinned with 7075-T6 and it was severely corroded on the inside. The only thing I could figure was that Airstream got a good deal on some surplus sheet. This alloy is incredibly strong but with poor corrosion resistance. Aircraft frames used to be made of this alloy but has been replaced with other alloys with better corrosion and fatigue resistance.
I used 2024-T3 to replace the most corroded panels with no issues at all.
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