Steel or aluminium: which should I choose for garden furniture?

We weld the Loft armchair, sofa and lounge set, the daybed, the rocking chair, the sun lounger and the balcony set in either steel or aluminium, in the same shape and colour. Steel is heavier and stays firmly in place on an open terrace. Aluminium is much lighter and does not rust, so we recommend it for balconies, roof terraces and anywhere furniture gets moved often. We weld aluminium in our own workshop, and both materials are powder coated in any RAL colour.