The table is called Norman standards. To find a paticular alternate you look up the material specifications for that LN9073 and it will give you an alternate. I do not have access to the program since I am on my days off. Maybe Apathoid can look it up for you he's a smart guy, just ask him.
Also you didn't mention if you wanted sheet stock, rod stock, tubing or raw stock. It is important to take this into consideration when quering Norman Standards.