Constructional?
To quote the master, "constructional stretch is a permanent elongation that results from the strands in a new piece of wire settling into place when the wire is first put into use". Of course, this quote refers to wire, but the same behavior applies to cordage.
I think there may be a typo in that 20%, maybe 2%?
I also have seen constructional stretch somewhat recover in cordage, I'd think wire would do the same thing but to a lesser degree. I have customers that will pretension halyards before each race to take up any elasticity.
Bob
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