BAQ alphaDUR mini, Manual

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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 from to
Steel, cast steel (A1) 80 HV 76 HB 650 HV 618 HB
240 HV 20.3 HRC 940 HV 68.0 HRC
85 HV 41.0 HRB 290 HV 105.0 HRB
80 HV 255 MPa 650 HV 2180 MPa
90 HV 82.6 HRF 250 HV 115.1 HRF
240 HV 60.7 HRA 940 HV 85,. HRA
240 HV 40.3 HRD 940 HV 76.9 HRD
240 HV 19.9 HR45N 940 HV 75.4 HR45N
Tempering steel,
tempered (B2) 210 HV 205 HB 650 HV 632 HB
210 HV 15.3 HRC 650 HV 57.5 HRC
210 HV 94.8 HRB 410 HV 113.6 HRB
210 HV 651 MPa 470 HV 1460 MPa
210 HV 110.4 HRF 410 HV 121.5 HRF
210 HV 57.2 HRA 650 HV 79.9 HRA
210 HV 13.4 HR45N 650 HV 60.6 HR45N
Tempering steel,
annealed (B3) 150 HV 152 HB 320 HV 316 HB
160 HV 1.0 HRC 320 HV 336 HRC
150 HV 81.0 HRB 320 HV 108.9 HRB
140 HV 460 MPa 240 HV 826 MPa
150 HV 102.5 HRF 320 HV 118.4 HRF
150 HV 48.4 HRA 320 HV 67.2 HRA
170 HV 0.8 HR45N 320 HV 35.0 HR45N
Tempering steel,
hardened (B4) 580 HV 572 HB 720 HV 677 HB
580 HV 54.0 HRC 720 HV 60.1 HRC
580 HV 78.1 HRA 720 HV 78.1 HRA
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