Hardness Conversion Table

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HRC	HB	HV	HRA	Rm (Tensile Strength)
Diamond penetrator	Brinell 3000 Kgf	Vickers 30	Diamond penetrator	N/mm MPa
68	–	940	85.6	–
67	–	900	85.0	–
66	–	865	84.5	–
65	739	832	83.9	–
64	722	800	83.4	–
63	706	772	82.8	–
62	688	746	82.3	–
61	670	720	81.8	–
60	654	697	81.2	–
59	634	674	80.7	2420
58	615	653	80.1	2330
57	595	633	79.6	2240
56	577	613	79.0	2160
55	560	595	78.5	2070
54	543	577	78.0	2010
53	525	560	77.4	1950
52	512	544	76.8	1880
51	496	528	76.3	1820
50	482	513	75.9	1760
49	468	498	75.2	1700
48	455	484	74.7	1640
47	442	471	74.1	1580
46	432	458	73.6	1520
45	421	446	73.1	1480
44	409	434	72.5	1430
43	400	423	72.0	1390
42	390	412	71.5	1340
41	381	402	70.9	1300
40	371	392	70.4	1250
39	362	382	69.9	1220
38	353	372	69.4	1180
37	344	363	68.9	1140
36	336	354	68.4	1110
35	327	345	67.9	1080
34	319	336	67.4	1050
33	311	327	66.8	1030
32	301	318	66.3	1010
31	294	310	65.8	970
30	286	302	65.3	950
29	279	294	64.6	930
28	271	286	64.3	900
27	264	279	63.8	880
26	258	272	63.3	860
25	253	266	62.8	850
24	247	260	62.4	820
23	243	254	62.0	810
22	237	248	61.5	790
21	231	243	61.0	770
20	226	238	60.5	760