White Aluminum Oxide (WA)

Features: White aluminum oxide has white color and a litter higher hardness and toughness comparing with the brown one.

Application: The grinding tools made of this material are suitable for fine grinding of higher carbon steel, high-speed steel and stainless steel. Abrasive powder of finer grit sizes can also be used for precision casting and high-grade refractory materials.

Physical Characteristics
Item	White Aluminum Oxide
Basic mineral	∝-Al2O3
Crystal Color	White
True Density	>3.90g/cm3
Bulk density	1.75-1.95g/cm3
Mohs hardness	9
Knoop Hardness	2200－2300kg/mm2

Grains Types and Grades

Usage	For vitrified wheels	For Resinoid Bond	For Coated Abrasives
Type & Grade	WA	WA-B	WA-P1

Physical Chemical Performance Index

Symbol	Range of the Grain	Chemical Composition(%,by weight)		True Density	Shape of the Grain
WA	F12~80	≥ 98.50	≤ 0.40	≥ 3.90	Blocky
	F90~150	≥ 98.00	≤ 0.40
	F180~220	≥ 98.00	≤ 0.40
	F230~400	≥ 97.50	≤ 0.50
	F500~1200	≥ 97.00	≤ 0.60
WA-B	F12~80	≥ 99.00	≤ 0.40	≥ 3.90	Blocky
	F90~150	≥ 98.50	≤ 0.40
	F180~220	≥ 98.00	≤ 0.40
	F230~600	≥ 97.50	≤ 0.50
WA-P1	F16~80	≥ 99.00	≤ 0.40	≥ 3.90	Needle Shape
	F100~150	≥ 98.50	≤ 0.40
	F180~400	≥ 98.00	≤ 0.50
	F500~1200	≥ 97.50	≤ 0.60

Note: Special requirements on chemical composition can be satisfied through discussion.