Abstract
PROBLEM TO BE SOLVED: To provide a high entropy multicomponent alloy provided with high hardness, high heat resistance and high acid resistance. SOLUTION: The high entropy multicomponent alloy consists of a plurality of kinds of elements. The alloy contains 5 to 11 kinds of main metallic elements. The molar number of each kind of metal element is 5% to 30% of the total mol number of the alloy. The alloy is provided with high hardness, high heat resistance and high acid resistance.