Rockwell reference blocks are calibrated in accordance to DIN EN ISO 6508-3 / ASTM E18. All reference blocks come with a DAkkS-Calibration certificate.

HR2,5/62,5 and HR2,5/187,5 reference blocks are calibrated in accordance to VDI/VDE 2616-1. All reference blocks come with a DAkkS-Calibration certificate.

On request you can get all hardness reference blocks with a laser pattern for a better coordination of your indentations and for keeping the distances in accordance to DIN EN ISO 6508-3 / ASTM E18.

 

For requests and orders you can use our contact form or by phone +49 7024 920310

 

Rockwell hardness reference blocks 60x60x16mm / 100x100x16mm

 

HR ScaleHardness value
Hardness reference block 60x60x16mm

Calibration certificate according to DIN EN ISO 6508-3 / ASTM E18

Material: Aluminium & Steel

Dimensions:
60x60x16mm, optionally with laser pattern
100x100x16mm, optionally with laser pattern

 

Hardness values may vary - hardness values are given as reference!
HRA 31 40 44 53 57 62 65 68 71 73 75 77 79 80 81 82 83 84 85
HRB 35 64 72 86 93 100                          
HRC           25 30 35 40 45 50   55   60   63 65 67
HRD   10 16 28   42 48 52 56 60 62 65 67 69 71 72 73 75 76
HRE 73 91 97 106                              
HRF 76 92 97 105                              
HRG     41 62                              
HRK 45 71 78 91                              
HR15N       62   71 75 78 80 83 85 87 88 89 90 91 91 92 93
HR30N       28   43 50 56 60 64 68 71 73 76 78 79 81 82 84
HR45N       2   22 31 38 44 50 54 58 61 64 67 69 71 73 74
HR15T 70 80 82 87 91                            
HR30T 37 57 62 72 78                            
HR45T 5 36 43 57 66                            
HR2,5/62,5 63 74 79 84                              
HR2,5/187,5           60 67 72 77 80                  
  Aluminium Steel

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