Sid Wood wrote: > The Aircraft Spruce & Specialty catalog has three pages of definitions and characteristics for aluminum alloy. More than you will ever need to know for building a KR Aircraft. If all else fails, read the directions (in the plans).<<
The Aircraft Spruce catalog makes very little mention 6061-T5, other than it's articficially aged. I've looked around a little and have yet to find anything in my books about T5, but I haven't exactly knocked myself out on that either. I've seen several mentions of it on the web, but it's usually "6061-T5/6", so apparently that are practically the same thing, with the same properties, but arrived at through different aging processes. Mark Langford, Huntsville, AL N56ML at hiwaay.net see KR2S project N56ML at http://home.hiwaay.net/~langford