Block size: 60mm | round
Block material thickness: 10mm
Standard hardness values: 20 / 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 63 / 65
Calibration details: INNOVATEST Rockwell hardness calibration blocks are calibrated & DUAL-certified by UPI Laboratories, accredited by the Dutch National Board of Accreditation and are traceable to National/International standards according to ISO 6508/3 & ASTM-E18 A4.
Calibration environment: (23 ± 2) °C, < 70 %rh
Validity: This reference block is valid for the scale for which it was calibrated. It is recommended to replace reference hardness test blocks every 5 years. Blocks manufactured of Al-alloys and Cu-alloy, should be replaced within 2 to 3 years.
Uncertainty: The expanded uncertainty is based on a standard uncertainty multiplied by a factor (k=2), providing a confidence level of approximately 95%. The evaluation of the uncertainty is carried out in accordance to International requirements.
Traceability: All measurements involved will be traceable to international applicable standards.
