The Captain America's Shield is 2.5 feet (0.76 meters) in diameter and weighs 12 pounds (5.4 kilograms). Created by Dr. Myron MacLain, first appeared in Captain America Comics #2 (April 1941).
Captain America's Shield is a smooth, disc-shaped round shield with perfect aerodynamics. It can move in the air with minimal wind resistance and ensures that the throwing route does not shift. The shield also has super toughness, and its natural concentric stiffness makes it the perfect thrower. It only loses the minimum angular momentum when it comes into contact with a solid object. After long-term training, the user can throw the shield out of the target, or control the shield to return to the user after multiple rebounds. The Captain America's shield is made of the original Proto-Adamantium. The composition is composed of Vibranium, iron and certain chemicals. It is almost indestructible and can withstand extreme pressure, extreme temperature, radiation, electromagnetic spectrum, etc. Invade. It is known that the method by which it can be destroyed is to tamper with its molecular connection by means of a "molecular rearranger". The appearance of Captain America's Shield is similar to the American flag, consisting of red (symbolizing courage), white (symbolic truth), and blue (symbolic justice) with a white five-pointed star in the middle.
The Captain America Captain's Shield is actually a product of an experimental accident. During the Second World War, Dr. Myron MacLain wanted to create an indestructible alloy for the United States, once when he was in the lab, the gold, iron and certain chemicals on the workbench. The accidents combine to become the hardest metal known on earth. However, because the process of synthesis and the proportion of various ingredients are unknown, Dr. Myron Mark Klein could not reproduce the metal. This experimental accident product was later made into a round shield, and then presented to Captain America, becoming the flagship weapon of the US captain.