This report discusses the materials used in manufacturing the Boeing 787 Dreamliner. It notes that the 787 uses composite materials for around half of its airframe, resulting in around a 20% weight savings compared to more conventional aluminum designs. It also discusses the benefits of using titanium and nano-coatings on engine components, allowing them to withstand higher temperatures and friction. The report concludes that advances in materials have allowed Boeing to develop airplanes that are more cost-effective and fuel efficient while maintaining environmental friendliness.