International Tin Research Institute http://www.tintechnology.com/
Information about tin and its uses, tin and the environment, lead-free soldering, and other topics related to tin utilization. Also current news, market and regulatory information, and links to related sites.
Purdue University Material Properties Handbooks Operation http://www.purdue.edu/mpho/
Materials handbooks for the aerospace and transportation industries. The handbooks operation distributes the Aerospace Structural Metals Handbook, Structural Alloys Handbook, Composite Failure Analysis Handbook and the Damage Tolerant Design Handbook
Stainless Steel http://www.brownmetals.com/home.asp
Technical information on the chemical and physical properties together with hardness conversion tables in PDF or Excell format. Just click the button marked "Technical Info"