www.matweb.com : Online material information Resource. MatWeb's searchable database of material properties includes data sheets of thermoplastic and thermo set polymers such as ABS, nylon, polycarbonate, polyester, polyethylene and polypropylene; metals such as aluminum, cobalt, copper, lead, magnesium, nickel, steel, super alloys, titanium and zinc alloys; ceramics; plus semiconductors, fibers, and other engineering materials.

www.efunda.com : eFunda stands for engineering Fundamentals. Its mission is to create an online destination for the engineering community, where working professionals can quickly find concise and reliable information to meet the majority of their daily reference needs.

www.onlineconversion.com : Online Converter, convert just about anything to anything else. Over 5,000 units, and 50,000 conversions.

www.gadsl.org : Global Automotive Declarable Substance List (GADSL). The GADSL only covers substances that are expected to be present in a material or part that remains in a vehicle at point of sale.