Hardness comparison

Encyclopedia : H : HA : HAR : Hardness comparison

There are a large number of hardness testing methods avaiable (eg. Vickers, Brinell and Rockwell). Although it is impossible in many cases to give an exact conversion it is possible to give a comparison table.

Hardness Comparison Table

Brinell (10 m/m Ball, 3000Kg load)	Vickers (120 Kg)	Rockwell C (120 degree cone 150 Kg)	Rockwell B (1/16" ball 100 Kg)
800
72
780	1220	71
760	1170	70
745	1114	68
725	1060	67
712	1021	66
682	940	65
668	905	64
652	867	63
626	803	62
614	775	61
601	746	60
590	727	59
576	694	57
552	649	56
545	639	55
529	606	54
514	587	53	120
502	565	52	119
495	551	51	119
477	534	49	118
461	502	48	117
451	489	47	117
444	474	46	116
427	460	45	115
415	435	44	115
401	423	43	114
388	401	42	114
375	390	41	113
370	385	40	112
362	380	39	111
351	361	38	111
346	352	37	110
341	344	37	110
331	335	36	109
323	320	35	109
311	312	34	108
301	305	33	107
293	291	32	106
285	285	31	105
276	278	30	105
269	272	29	104
261	261	28	103
258	258	27	102
249	250	25	101
245	246	24	100
240	240	23	99
237	235	23	99
229	226	22	98
224	221	21	97
217	217	20	96
211	213	19	95
206	209	18	94
203	201	17	94
200	199	16	93
196	197	15	92
191	190	14	92
187	186	13	91
185	184	12	91
183	183	11	90
180	177	10	89
175	174	9	88
170	191	7	87
167	168	6	87
165	165	5	86
163	162	4	85
160	159	3	84
156	154	2	83
154	152	1	82
152	150
82
150	149
81
147	147
80
145	146
79
143	144
79
141	142
78
140	141
77
135	135
75
130	130
72
114	120
67
105	110
62
95	100
56
90	95
52
81	85
41
76	80
37

Hardness comparison

Hardness Comparison Table

See also