Brown Aluminum Oxide

Type: AE-17HM

It is one kind of Brown Aluminium Oxide grains with blocky grain shape and high bulk density. To get this kind of product, we treat the regular grains at a medium high temperature to give a light blue colour, the purpose is to renovate the crack on the surface and interior of crystal and then to improve the toughness and durability of the grains.

As an abrasive, the AE-17HM is mainly used in making vitrified and organic bonded grinding wheels. The cost of AE-17HM is more economic than AE-17H.

Process way: Medium high temperature treated; Barmac Process

Typical Chemical Analysis

Al2O3	Fe2O3	TiO2	SiO2	CaO
95.84%	0.06%	2.40%	0.93%	0.22%

Physical Properties

Color	Light blue
Shape	Blocky, tough and sharp
Crystal Form	Alpha-alumina trigonal system
True Specific Gravity	3.96 g/cm3
Hardness	2090 Knoop scale; 9.0 Mohs scale
Melting Temperature	About 2050 ℃
Magnetic Material	0.0076%
Toughness	59.78
Hydrophilic	58.00

Bulk Density Test Value (g/cm3)

Grit No	F12	F14	F16	F20	F22	F24	F30	F36	F40	F46
B.D	1.98	1.97	1.96	1.91	1.91	1.91	1.90	1.85	1.80	1.80
Grit No	F54	F60	F70	F80	F90	F100	F120	F150	F180	F220
B.D	1.75	1.75	1.75	1.74	1.73	1.73	1.73	1.70	1.69	1.64