Certified master hardness reference test blocks for Rockwell superficial scales (N and T), calibrated by an ISO/IEC 17025 accredited laboratory (ANAB, AC 3026.01) and covered by the ILAC-MRA. Each block is supplied with a calibration certificate compliant with ASTM standards and includes an additional ISO certificate. Mirror-finished test surface.
Select the hardness scale and range from the options. Scales marked “(made to order)” are produced on demand with a delivery time of approximately 30 days.
Prices are ex-works; shipping is charged separately. Payment by bank transfer at the time of ordering.
Learn more about our certified hardness test blocks
Learn more about the method: Rockwell hardness testing guide · Rockwell test theory (ASTM E18 / ISO 6508)
All six Rockwell superficial scales: HR15N, HR30N and HR45N (N scales, diamond indenter) and HR15T, HR30T and HR45T (T scales, ball indenter), each in three certified hardness ranges.
Each block measures Ø 60 × 10 mm and weighs 0.2 kg, with a mirror-finished test surface.
Every block is calibrated by an ISO/IEC 17025 accredited laboratory (ANAB, AC 3026.01) and the calibration is covered by the ILAC-MRA. The certificate complies with ASTM standards and an additional ISO certificate is included.
Select the hardness scale and then the hardness range you need from the drop-down menu. Each option corresponds to one certified master reference block within that range.
Prices are ex-works and shipping is charged separately. Payment is made by bank transfer at the time of ordering. Scales marked as made to order are produced on demand with a delivery time of approximately 30 days.
