noun
Rockwell hardness
A measure of material hardness determined by the depth of indentation under a specific load, commonly used in engineering and metallurgy. The term is often used in technical contexts.
See also: ロックウェル硬さ
この鋼材のロックウェル硬度はHRC60です。
The Rockwell hardness of this steel is HRC60.
ロックウェル硬度
The Rockwell hardness test is widely used to evaluate the hardness of materials.