We work with a wide variety of core substrates, but our specialty is aluminum honeycomb for various applications. Aluminum honeycomb cores have numerous uses and can be produced in several ways. Internal aluminum honeycomb core substrates are the foundation of many panels. The core is comprised of ¼” aluminum honeycomb with a 3003 aluminum alloy grade. The hexagonal cells are a 1/4” in diameter. This is a structural grade aluminum honeycomb that is core used for emergency vehicle flooring, commercial trailers and structural wall cladding. ¼” aluminum honeycomb core is strong and rigid while remaining lightweight.