Materials Data Websites
matweb.com
Material property database with data sheets of thermoplastic and thermoset polymers such as nylon, polycarbonate, polyethylene; metal alloys, aluminum, steel, titanium, nickel,...
48,004 
$ 280,080.00
techstreet.com
Engineering standards, specifications, technical books, and more technical resources for engineers, technicians, scientists and other technical people.
65,220 $ 205,920.00