ロックウェル硬こう度ど

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

• この鋼こう材ざいのロックウェル硬こう度どはHRC60です。