Honeycombs, Foams and Other Core Materials

Core materials are used in composites to provide strength and stiffness without adding much additional weight. Learn about the most common composite core materials.

Core-Cell linear structural foam. Designed as a sandwich core primarily for boats. Machineable, thermoformable. Technical and sales data sheets, processing instructions and table of sizes online.

One of the leading suppliers of balsa, also carries a range of PVC foams, BaltekMat and Coremat bulker mats, and Baltek Bond core adhesive. Datasheets, processing guides and MSDSs for most materials.

Resin formulator and prepregger with a small line of syntactic foams, including a cyanate ester syntactic. Basic info online with an e-mail address for more details.

Distributor of MIL-C-7438 aluminum honeycomb. Can be cut to a wide range of sizes, including custom-routed shapes.

Buys and sells surplus materials, including Nomex, aluminum, and fiberglass honeycombs, plus core ancillaries such as potting compounds and splicing adhesives. Site lists available materials with basic specs.

Manufacturer of structural lightweight core materials including Divinycell, Klegecell, ProBalsa, CBA's, Panels and related ancillary materials. Technical specs available after free registration. List of distributors.

Spray-applied structural foam. Applications include boats, spas, and RV panels. Other foams available for coating applications.

Last-A-Foam rigid and flexible polyurethane foams. A fair amount of product info, but no technical specs. Site design is crowded; navigation links could be more descriptive.

NC Proofboard urethane foam is machineable and can be used as a sandwich core.

Stocks bonded, welded, and machined honeycomb from a variety of sources. Large in-stock inventory. Specializes in aircraft applications.

Manufacturer of extruded polypropylene honeycomb. Basic material properties and pictures of sample applications provided.

Manufacturers of aluminum, Nomex, and polycarbonate honeycombs. Material data sheets and a list of sales offices provided.