www.steel.org : Site of the American Iron and Steel Institute (AISI), offering information on the diverse application of steel, technical information ranging from how steel is made, glossary of terms, to publishing of technical standards.

www.acier.org : Site web offrant information sur les applications de l'acier, incluant renseignements techniques.

www.worldsteel.org : Site of the International Iron and Steel Institute, offering much the same as www.steel.org , but at an international level.

www.world-aluminium.org , www.aluminum.org & www.aluminium.org : Sites of the International Aluminium Institute, The Aluminum Association (USA), and European Aluminium Association respectively, telling you most of what you might want to know about aluminum.

www.ssina.com : An information resource for stainless and other specialty steels. Includes alloy information, chemical and physical properties, glossary of terms, etc.

www.copper.org : Site offering a wealth of information on copper

www.cuivre.org : Site web offrant information sur les applications de cuivre, incluant renseignements techniques.

www.ansi.org : Site of the American National Standards Institute (ANSI), publishing national standards used in the steel industry, as well as almost any technical domain.

www.astm.org :American Society for Testing and Materials (ASTM), publishers of ASTM standards, which include but are not limited to the metals industry.

www.metalinfo.com : Largely a user pay site for searching worldwide metal standards, but also includes free services such as a glossary of terms used in the metal industry, hardness conversion charts, a metric converter, etc.