Hardness reference table

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Brinell hardness (HB)	Rockwell hardness			Vickers hardness (HV)	Elimination Scale Hardness (ES)
Brinell hardness (HB)	(ERA)	(HRB)	(HRC)	Vickers hardness (HV)	Elimination Scale Hardness (ES)
—	85.6	—	68.0	940	97
—	85.3	—	67.5	920	96
—	85.0	—	67.0	900	95
767	84.7	—	66.4	880	93
757	84.4	—	65.9	860	92
745	84.1	—	65.3	840	91
733	83.8	—	64.7	820	90
722	83.4	—	64.0	800	88
710	83.0	—	63.3	780	87
698	82.6	—	62.5	760	86
684	82.2	—	61.8	740	—
682	82.2	—	61.7	737	84
670	81.8	—	61.0	720	83
656	81.3	—	60.1	700	—
653	81.2	—	60.0	697	81
647	81.1	—	59.7	690	—
638	80.8	—	59.2	680	80
630	80.6	—	58.8	670	—
627	80.5	—	58.7	667	—
620	80.3	—	58.3	660	79
601	79.8	—	57.3	640	77
578	79.1	—	56.0	615	75
—	78.8	—	55.6	607	—
555	78.4	—	54.7	591	73
—	78.0	—	54.0	579	—
534	77.8	—	53.5	569	71
"one" radical in Chinese characters (Kangxi radical 1)	77.1	—	52.5	553	—
514	76.9	—	52.1	547	70
—	76.7	—	51.6	539	—
—	76.4	—	51.1	530	—
495	76.3	—	51.0	528	68
—	75.9	—	50.3	516	—
477	75.6	—	49.6	508	66
—	75.1	—	48.8	495	—
461	74.9	—	48.5	491	65
—	74.3	—	47.2	474	—
444	74.2	—	47.1	472	63
429	73.4	—	45.7	455	61
415	72.3	—	44.5	440	59
401	72.0	—	43.1	425	58
388	71.4	—	41.8	410	56
375	70.6	—	40.4	396	54
363	70.0	—	39.1	383	52
352	69.3	—	37.9	372	51
341	68.7	—	36.6	360	50
331	68.1	—	35.5	350	48
321	67.5	—	34.3	339	47
311	66.9	—	33.1	328	46
302	66.3	—	32.1	319	45
293	65.7	—	30.9	309	43
285	65.3	—	29.9	301	"one" radical in Chinese characters (Kangxi radical 1)
277	64.6	—	28.8	292	41
269	64.1	—	27.6	284	40
262	63.6	—	26.6	276	39
255	63.0	—	25.4	269	38
248	62.5	—	24.2	261	37
241	61.8	100.0	22.8	253	36
235	61.4	99.0	21.7	247	35
229	60.8	98.2	20.5	241	34
223	—	97.3	—	234	—
217	—	96.4	—	228	33
212	—	95.5	—	222	—
207	—	94.6	—	218	32
201	—	93.8	—	212	31
197	—	92.8	—	207	30
192	—	91.9	—	202	29
187	—	90.7	—	196	—
183	—	90.0	—	192	28
179	—	89.0	—	188	27
174	—	87.8	—	182	—
170	—	86.8	—	178	26
167	—	86.0	—	175	—
163	—	85.0	—	171	25
156	—	82.9	—	163	—
149	—	80.9	—	156	23
143	—	78.7	—	150	22
137	—	76.4	—	143	21
131	—	74.0	—	137	—
126	—	72.0	—	132	20
121	—	69.8	—	127	19
116	—	67.6	—	122	18
111	—	65.7	—	117	15

About This Tool:

1. Hardness: A performance indicator used to measure the softness or hardness of a material. There are numerous testing methods, each based on different principles, and the resulting hardness values and their interpretations may vary.

2. This tool provides reference comparisons for common hardness units, including Shore, Rockwell, Vickers, and Leeb hardness.

3. Brinell Hardness (HB): A carbide or cemented steel ball with a diameter of 1, 2.5, 5, or 10 mm is pressed into the surface of the material under test using a test force ranging from 1 to 3000 kgf, and the maximum indentation is measured.

4. Vickers Hardness (HV): A square-pyramid-shaped diamond indenter with a 136° angle between its faces is pressed into the surface of the material being tested with a test force of 1–120 kgf, and the resulting indentation is measured.

5. Rockwell Hardness (HR): A diamond cone (HRC) or a hardened (tungsten) steel ball indenter (HRB, etc.) is pressed into the surface of the material under test with a preload of 10 kgf and a main test force of 60, 100, or 150 kgf, and the resulting indentation is measured.