expanded metal

noun2

1. •
   Sheet metal that has been slit and stretched at right angles to the slits to form a lattice; used for making screens etc and for reinforcing concrete.

   • […]the in-fill is, alternatively, steel panels, reinforced concrete panels, and steel mesh (e.g., chain link, expanded metal, and fine mesh). — 1999
2. •
   (old-fashioned) An alloy that has expanded upon cooling.

   • If the action is carried on at an elevated temperature, the adhesion is greater, because the contraction of the expanded metal binds the film more closely. — 1848