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Reference blocks Brinell ≥ 250 kg

Scale
F/D²
Nominal reference block values
HBW 10/3000
30
70
100
150
170
200
250
300
350
400
450
500
550
600
650
HBW 10/1500
15
70
100
150
170
200
250
300
350
400
450
500
550
600
650
HBW 10/1000
10
70
100
150
170
200
250
300
350
400
450
500
550
600
650
HBW 10/500
5
70
100
150
170
200
250
300
350
400
450
500
550
600
650
HBW 10/250
2,5
70
100
150
170
200
250
300
350
400
450
500
550
600
650
HBW 5/750
30
70
100
150
170
200
250
300
350
400
450
500
550
600
650
HBW 5/250
10
70
100
150
170
200
250
300
350
400
450
500
550
600
650

All nominal reference block values highlighted and in italics, eg.
300
are outside the ranges specified in EN ISO 6506-3 and ASTM E10. UKAS Certificates can still be supplied with these reference blocks, but the certificate will state that the reference block is outside the permitted range.