A person would use a Medicus 5 iron in the sport of golf.
A "sand Iron" is a golf club (iron) designed to hit a golf ball out of a sand trap or bunker.
Golf (It is a club similar to a 9 iron)
A 5 Iron, or middle iron, is generally used for an average distance 170 yards for an average golfer.
Baseball, football, and any other sport.
golf
Iron is needed to produce iron sulphate.
air hockey
baseball bats
Gymnastics
Golf
I think they use steel because, the instruments would rust if it was iron & germs would transfer.