Web site for steel cross-referance

[voltair]

I would like to come across a good comprehensive web-site for steel equivalent cross-referance. I am working with cold rolled steel box section, mainly 40x40x4 mm and it is very confusing to visit various sites that give a biased list of standards. My background is not mechanical so I can spend hours searching the web with very little to show.

I would appreciate any help.

Many thanks
Voltair

 

[voltair]

Each country have their own code system for catogerising their various grades of steel. I would like a cross referance table that would give equivalent grades for steel of like properties from each country, such as American, Russian, European, UK etc. An example is, what equivalent American grade is similar to the German ST 40-2 It is important for sourcing steel from different countries.