John Brinell

John Brinell was a Swedish engineer and metallurgist known for developing the Brinell hardness test in 1900. This test measures the hardness of metals by pressing a steel or tungsten carbide ball into the material under a set load. The size of the indentation indicates how hard the material is: smaller indentations mean harder metal. This method helps engineers evaluate and compare the strength and durability of different metals and alloys, making it a widely used technique in materials science and manufacturing to ensure materials meet specific standards.