Forging is a process in which metal is shaped by being heated and then hammered or pressed. Almost any metal can be forged. The most commonly forged metals include steel and aluminum, and alloys of nickel and titanium. Forgings (objects made by forging) range in size from small hand tools to huge engine shafts weighing hundreds of tons. They include such products as wrenches, crankshafts, axles, and supports for aircraft landing gear.