Astm E140 - 12B (2019) - BAQ alphaDUR mini Manual

APPENDIX 1: HARDNESS CONVERSION VALIDITY RANGES
Material
Tool steel 1.2741 (G1)

15.2 ASTM E140 - 12b (2019)

The tables of ASTM E140 - 12b (2019), used for conversion in the alphaDUR
mini, apply to the following materials and hardness scales:
Material
Non-Austenitic Steels
(1/2)
Nickel and High-Nickel
Alloys (3)
Cartridge Brass(4)
46
from
305 HV 950 MPa
305 HV 65.9 HRA
280 HV 279 HB
280 HV 27.7 HRC
280 HV 880 MPa
280 HV 62.9 HRA
from
100 HV 100 HB
238 HV 20.0 HRC
100 HV 55.0 HRB
100 HV 112 HK
100 HV 88.2 HRF
100 HV 37.2 HRA
238 HV 40.1 HRD
238 HV 19.6 HR45N
77 HV 77 HB
164 HV 2.0 HRC
77 HV 30.0 HRB
119 HV 136 HK
77 HV 73.0 HRF
112 HV 39.0 HRA
112 HV 8.0 HRD
171 HV 2.0 HR45N
77 HV 70.0 HRE
45 HV 42 HB
60 HV 10.0 HRB
45 HV 40.0 HRF
to
474 HV 1550 MPa
474 HV 74.9 HRA
424 HV 419 HB
424 HV 43.1 HRC
424 HV 1370 MPa
424 HV 72.3 HRA
to
832 HV 739 HB
940 HV 68.0 HRC
234 HV 99.0 HRB
940 HV 920 HK
137 HV 99.6 HRF
940 HV 85.6 HRA
940 HV 76.9 HRD
940 HV 75.4 HR45N
513 HV 479 HB
513 HV 50.0 HRC
309 HV 106 HRB
382 HV 436 HK
309 HV 116.5 HRF
513 HV 75.5 HRA
513 HV 63.0 HRD
513 HV 54.4 HR45N
188 HV 108.5 HRE
196 HV 169 HB
196 HV 93.5 HRB
196 HV 110.0 HRF