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Trim applied to fuselage and wings mounted. Initial taxi test has been accomplished. Wings removed to send struts out for powder coating.
Comment
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Comment by Daniel Niendorff on April 24, 2021 at 5:52am
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It has been my understanding that temperatures above 350 F would weaken 6061 T6 by over aging the metal and reducing yield strength. But I admit that my knowledge on this was incomplete. I was a little concerned about the idea of weakening a strut, so I dug a little deeper and found the paper linked below, which contains experimental data on 6061 heat exposure at different temperatures and for different durations. I am happy to say that I learned something useful. It does look like a short time at 400 F should not be detrimental.
digitalcommons.calpoly.edu/cgi/viewcontent.cgi?referer=https://duckduckgo.com/&httpsredir=1&article=1132&context=matesp
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Comment by James K. Allen on April 23, 2021 at 8:07pm
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Daniel..The struts are 6061T6 aluminum. Although I don't have the powder coating specs, they use a temp below 400 degrees for a short time so as to not affect the aluminum strength.
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Are the Cruzer struts steel aluminum 6061 T6? I ask because I have considered structural 6061 T6 parts on my aircraft as non powder coat items because of the heat affect on the alloy. At least at the temperatures that I do my powder coating at…
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