Andree here, The hardness testing equipment utilized may provide inconsistency if not performed in the specific location for 3 readings as per ASTM E18
The variation of the reading indicates that there needs to be repeatability before we can determine that the product is sound as the area indicated in B6 and C6 is not meeting the minimum 277 requirement
Please request DJ inspection to take additional measurement near the location of the area identified to take the average reading for each
If the reading is not within the requirement, would suggest that we request the raw material supplier to provide an advise on the hardness reading from the material certificate at the mid and quarter radius of the 380 mm heat#