306 Mohs to HRC

306 Mohs = 3 HRC

MohsHRC
291 Mohs2.85
296 Mohs2.9
301 Mohs2.95
3063
311 Mohs3.05
316 Mohs3.1
321 Mohs3.15

306 Mohs = 3 HRC

Formula (approximate)

1 HRC ≈ 10.2 HV · 1 HRB ≈ 1.8 HV · 1 Mohs ≈ 0.1 HV — approximate; real conversions vary by material per ASTM E140