What is Beef Flat Iron Steak?

Shoulder Top Blade (Flat Iron) Steak – Cut from the Chuck. This shoulder top blade steak is cut in a way that eliminates the connective tissue that runs through the center. Each half resembles a flank steak in shape. These pieces are cut crosswise into individual steaks.

Here's the link to Ask The Meatman. It will give you the answer to meat cuts for all types of meat.

http://www.askthemeatman.com/

One more better idea from the marketing department,to allow the store to get steak prices from a piece of chuck roast.

I'd probably marinate it over night in some Zesty Ital dressing,quick cook in on the grill to about 130º internal.

Let rest a few minutes and slice in 1/4 inch serving slices-across the grain.

Just my $0.02