Hardness testing measures a material’s resistance to deformation, helping assess strength and durability. The Rockwell test is a widely used method, measuring hardness by pressing a steel or carbide ball into the material’s surface under a specific load. The depth of the indentation determines the hardness value. This test is quick, reliable, and suitable for various metals and alloys. Accurate hardness testing ensures components meet quality standards and perform well under stress. It’s essential in industries like aerospace, automotive, and manufacturing. Ultimately, hardness testing helps optimize material selection and product longevity.