Hi Mick,
the glueing has a very positive side effect of sealing the gap between the panels in order to keep moisture and dirt out. But it is really not a nice thing to do, all the cleco pins, drills and tooling have to be constantly cleaned when you are assembling some sheets additionally with adhesive. In the end the adhesive should be just between the gap, and nowhere else.
About your question with the L163: 13% elongation is good, but as far as I dould find out this is for the T3 tempered condition (I was wondering, because a T6 tempered alloy with 13% elongation would be the unbelievable). I would consider the T6 stadium of this alloy as non bendable (except with radii as large as e.g. the cross section of an airplane fuselage), so if you want to use it for just flat sheet this will surely be a good choice if you have to have high strength. However if you have to bend, I think you can do it only with T3 or earlier temper stages. These do not have the strength of the T6 version but due to that the higher elongation necessary to bend.
Hope that is the info you needed
the glueing has a very positive side effect of sealing the gap between the panels in order to keep moisture and dirt out. But it is really not a nice thing to do, all the cleco pins, drills and tooling have to be constantly cleaned when you are assembling some sheets additionally with adhesive. In the end the adhesive should be just between the gap, and nowhere else.
About your question with the L163: 13% elongation is good, but as far as I dould find out this is for the T3 tempered condition (I was wondering, because a T6 tempered alloy with 13% elongation would be the unbelievable). I would consider the T6 stadium of this alloy as non bendable (except with radii as large as e.g. the cross section of an airplane fuselage), so if you want to use it for just flat sheet this will surely be a good choice if you have to have high strength. However if you have to bend, I think you can do it only with T3 or earlier temper stages. These do not have the strength of the T6 version but due to that the higher elongation necessary to bend.
Hope that is the info you needed