HRA, HRB, HRC
Hardness testing blocks are designed for metals hardness testers calibration.
There are available different nominal values of the blocks, such as: 25 HRC, 45 HRC, 65 HRC, 90 HRB, 83 HRA.
The blocks meet ASTM E18 standard.

Hardness testing blocks are designed for metals hardness testers calibration.
There are available different nominal values of the blocks, such as: 25 HRC, 45 HRC, 65 HRC, 90 HRB, 83 HRA.
The blocks meet ASTM E18 standard.
