Beef Steak Grilling Guidelines

Steaks should be cooked at a medium heat setting. For charcoal grills, cautiously hold the palm of your hand at cooking height above the ash-covered coals. Count the number of seconds you can hold your hand in that position; approximately 4 seconds is medium heat. All cook times are approximate for medium rare (145°F) to medium (160°F) doneness. Use an instant-read thermometer inserted horizontally into the side of steaks to check doneness. Allow 10 to 15 seconds for the thermometer to register the internal temperature. Always use tongs to turn steaks.

Source: Grill Once, Dine Twice