Looking for a material data source with eco properties (environmental impact, LSA)

To base our material choice also on their environmental impact, we are looking for an easy to use tool which gives us some kind of "eco properties index" of a chosen material. (Part of LSA - Life Cycle Analysis).

Does anybody know a material data source which gives us this kind of info of engineering materials used in the high-tech, machine building industry?

We have already found Granta Selector, but their info is quite extensive and may be a bit too much for us.