chief of state. n. pl. chiefs of state. The formal head of a nation, distinct from the head of the government. Also called head of state. chiefâ² of stateâ² n. the titular head of a nation, as a president or king. Thesaurus Antonyms Related Words Synonyms Legend: Switch to new thesaurus . Noun: 1.
Strength is an important quality in the use of metals. This is especially true in construction, transportation, heavy industry and tool making. Metal alloys are often stronger than a metal in their pure form. In discussing the strongest metals, we should first consider what we mean by strength.
Alloys An alloy is a mixture of two or more metals. When a material is needed which requires certain properties and this does not exist in a pure metal we combine metals. Pure white aluminium is very soft and ductile. Other elements can be added to create an aluminium alloy.