Materia - Materials: all
Materia is the global network in the area of innovative materials. Materia encourages joint innovation on the road to a more beautiful, sustainable and high-quality built environment.
MatWeb - Materials: all
MatWeb's searchable database of material properties includes data sheets of thermoplastic and thermoset polymers such as ABS, nylon, polycarbonate, polyester, polyethylene and polypropylene; metals such as aluminum, cobalt, copper, lead, magnesium, nickel, steel, superalloys, titanium and zinc alloys; ceramics; plus semiconductors, fibers, and other engineering materials.