Question: How many grades of steel are there?
Answer: Steel is not a single product and there are more than 3,500 different grades of steel with many different physical, chemical, and environmental properties. Approximately 75% of modern steels have been developed in the past 20 years. If the Eiffel Tower were to be rebuilt today, the engineers would only need one-third of the steel that was originally used. Modern cars are built with new steels that are stronger but up to 35% lighter than in the past.
Question: What is the life cycle assessment (LCA) of a steel product?
Answer: This is an examination of resources and energy used, as well as emissions produced, from the steel production stage to its end-of-life stage, including recycling. Click here for more information.