What is hardness of C-45 grade Material?

C-45 grade material, a medium carbon steel, typically has a hardness range of around 170 to 207 HB (Brinell hardness) in its normalized condition. When heat-treated, its hardness can increase significantly, reaching up to about 55 HRC (Rockwell hardness) depending on the specific heat treatment process applied. This material is often used in applications requiring good strength and wear resistance.