The Superficial Rockwell Hardness Test is a specialized Rockwell hardness method for thin, surface-treated, and delicate components. By using a 3 kgf minor load and 15, 30, or 45 kgf major loads, it creates very small indentations while providing fast, accurate, and direct hardness measurements. It is widely used in quality control for sheet metals, case-hardened parts, coatings, and precision-engineered components.