How strong is Sikaflex?

[Enoch]

Just trying to build my scuttle - I opted for a fabricated one. Being an electronics engineer sheet metal is not my strongest subject so please bear with me. I have made the framework - difficult but got there in the end. I am now attempting to skin it with aluminium, the frame work is all steel. I don't want rows of rivets showing so am thinking of sticking the alli to the steel with Sikaflex. I am struggling to get the alli to form around the frame though. My question is - would the sikaflex be so strong that I can bond the alli to the steel and then bend the alli round the steel without the sikaflex giving way? I am figuring that if I can stick it along the top then leave it to dry it should be much easier to form the alli - if I was using steel I could kind of stitch weld it as I go but I have already bought the alli.
Any advise would be very welcome at this stage - it's driving me quite mental.
Thanks in advance,
Dave.