In a composite panel, stiffness doesn't come from aluminum mass — it comes from geometry. The PE core holds the two skins apart and gives the panel its moment of inertia, the way an I-beam carries load with less material than a solid section. The result: at comparable rigidity, a composite panel is significantly lighter than a solid aluminum sheet — and it won't warp.
The Ahlum panel follows the standard market construction: two 0.5 mm 5005 aluminum skins, a polyethylene (PE) core, 4 mm total thickness, matte PVDF finish on the exposed face. Light doesn't mean flimsy: the surface stays flat and rigid, even in the large 5×10 format.
