Chrome Corundum

Pink Fused Aluminum Oxide contain chromium oxide, which gives the material its pink color. The incorporation of Cr2O3 into the Al2O3 crystal lattice produces an increase in toughness and a reduced friability compared with White Fused Aluminum Oxide.

Chemistry		F12～F80	F90～F150	F180～F220
Low Chromium	AL₂O₃	≥98.5%	≥98.5%	≥98.0%
	Cr₂O₃	0.20-0.45%	0.20-0.45%	0.20-0.45%
	NA₂O	≤0.50%	≤0.55%	≤0.60%
Medium Chromium	AL₂O₃	≥98.2%	≥98.2%	≥97.8%
	Cr₂O₃	0.45-1.0%	0.45-1.0%	0.45-1.0%
	NA₂O	≤0.55%	≤0.60%	≤0.70%
High Chromium	AL₂O₃	≥97.4%	≥97%	≥96.5%
	Cr₂O₃	1.0-2.0%	1.0-2.0%	1.0-2.0%
	NA₂O	≤0.55%	≤0.60%	≤0.70%

Basic minerals	Crystal size	Mohs hardness	Nup hardness	Melting point	Proportion	Bulk density	Colour	Crystal form
α-Al2O3	600-800	9	2200-2300	2050℃	3.9-4.1g/cm3	1.40-1.91	Pink	Polygonal shape
α-Al2O3	μm	9	kg/cm3	2050℃	3.9-4.1g/cm3	g/cm3	Pink	Polygonal shape

Particle size range	Low chromium	Medium chromium	High chromium
F12-F30	0.004	0.005	0.006
F36-F60	0.0036	0.0045	0.0055
F70-F120	0.0032	0.004	0.005
F150-F220	0.0028	0.0036	0.004

Description

The main component of pink corundum is α-alumina, also called chromium corundum or ruby.

The main mineral composition is α-Al2O3-Cr2O3 solid solution.

The secondary mineral composition is a small amount of composite spinel (or no composite spinel) and refractory bricks with a chromium oxide content of 1% to 30%.

Chrome corundum uses aluminum oxide as the main raw material and is adapted to chromium oxide, etc. Made by smelting at high temperatures. It is pink in color, has a hardness similar to that of white corundum, and has higher toughness than white corundum. The abrasive tools made of it have good durability and high grinding finish. Suitable for precision grinding of measuring tools, machine tool spindles, instrument parts, threaded workpieces and template grinding.

Chrome Corundum

Chrome Corundum

Description

Available Sizes