Hardness Conversion Chart for Aluminium

Approximate Hardness Conversion Numbers for Wrought Aluminum Products
Brinell Hardness No. 10mm Standard Ball, 3000 Kgf (HBS)	Vicker's Hardness Number (HV)	Rockwell Hardness Number B Scale, 100 Kgf (HRB)	Rockwell Hardness Number E Scale, 100 Kgf (HRE)	Rockwell Hardness Number H Scale, 60 Kgf (HRH)	Rockwell Superficial Hardness No. / 15T Scale, 15 Kgf (15T)	Rockwell Superficial Hardness No. 30T Scale, 30 Kgf (30T)	Rockwell Superficial Hardness No. 15W Scale, 15 Kgf (25W)
160	189	91	----	-----	89	77	95
155	183	90	----	-----	89	76	95
150	177	89	----	-----	89	75	94
145	171	87	----	-----	88	74	94
140	165	86	----	-----	88	73	94
135	159	84	----	-----	87	71	93
130	153	84	----	-----	87	71	93
125	147	79	----	-----	86	68	92
120	141	76	101	-----	86	67	92
115	135	72	100	-----	86	65	91
110	129	69	99	-----	85	63	91
105	123	65	98	-----	84	61	91
100	117	60			83	59	90
95	111	56	96	-----	82	57	90
90	105	51	94	108	81	54	89
85	98	46	91	107	80	52	89
80	92	40	88	106	78	50	88
75	86	34	84	104	76	47	87
70	80	28	80	104	76	47	87
65	74	----	75	100	72	----	85
60	68	----	70	97	70	----	83
55	62	----	65	94	67	----	82
50	56	----	59	91	64	----	80
45	50	---	59	91	64	---	80
40	50	---	53	87	62	---	77

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