Appendix 1: Hardness Conversion Validity Ranges; Din En Iso 18265 - Feb.2014 - BAQ alphaDUR mini Manual

APPENDIX 1: HARDNESS CONVERSION VALIDITY RANGES

15 Appendix 1: Hardness conversion validity ranges

15.1 DIN EN ISO 18265 - Feb.2014

The tables of DIN EN ISO 18265 – Feb.2014, used for conversion in the
alphaDUR mini, apply to the following materials and hardness scales:
Material
Steel, cast steel (A1)
Tempering steel,
tempered (B2)
Tempering steel,
annealed (B3)
Tempering steel,
hardened (B4)
44
from
80 HV 76 HB
240 HV 20.3 HRC
85 HV 41.0 HRB
80 HV 255 MPa
90 HV 82.6 HRF
240 HV 60.7 HRA
240 HV 40.3 HRD
240 HV 19.9 HR45N
210 HV 205 HB
210 HV 15.3 HRC
210 HV 94.8 HRB
210 HV 651 MPa
210 HV 110.4 HRF
210 HV 57.2 HRA
210 HV 13.4 HR45N
150 HV 152 HB
160 HV 1.0 HRC
150 HV 81.0 HRB
140 HV 460 MPa
150 HV 102.5 HRF
150 HV 48.4 HRA
170 HV 0.8 HR45N
580 HV 572 HB
580 HV 54.0 HRC
580 HV 78.1 HRA
to
650 HV 618 HB
940 HV 68.0 HRC
290 HV 105.0 HRB
650 HV 2180 MPa
250 HV 115.1 HRF
940 HV 85,. HRA
940 HV 76.9 HRD
940 HV 75.4 HR45N
650 HV 632 HB
650 HV 57.5 HRC
410 HV 113.6 HRB
470 HV 1460 MPa
410 HV 121.5 HRF
650 HV 79.9 HRA
650 HV 60.6 HR45N
320 HV 316 HB
320 HV 336 HRC
320 HV 108.9 HRB
240 HV 826 MPa
320 HV 118.4 HRF
320 HV 67.2 HRA
320 HV 35.0 HR45N
720 HV 677 HB
720 HV 60.1 HRC
720 HV 78.1 HRA