In my opinion In the past, a common metal. Use it as a weapon to hunt and use it as a weapon in the war.It has not yet been developed by mixing together a metal alloy. Metal is metal on properties of that type.Most of the metal, used in the past, seems to be a steel and aluminium.In the current Metal is much more popular and widely consumed, whether used in the transport. Used to build housing. Household, or even the use of various types of weapons, so it has developed various metal, suitable for use and the needs of human beings. The metal saphom metal combination examples of alloys, such as aluminum alloy, Tai hotel.In the future. I think that, metal and alloys are developing more than at present, and the metals and alloys used in everyday life so much. The properties of it follow more needs.
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