Abrasives_Henan Sinjiasheng Import and Export Trading Co., Ltd

White aluminum oxide has white color and a little higher hardness and toughness comparing with the brown one. The grinding tools made of this material are suitable for fine grinding of high carbon steel, high-speed steel and stainless steel, Abrasive powder of finer grit size, can also be used for precision casting and high-grade refractory.

Grain types and symbol

Usage	For Vitrified Wheels	For Resinoid bond	For Coated abrasives
Symbol	WA	WA-B	WA-P1

Physical chemical performance index

Symbol	Range of the grain	Chemical composition (%)		True density	Shape of grain
Symbol	Range of the grain	Al₂O₃	Na₂O	True density	Shape of grain
WA	F12-80	≥98.50	≦0.40	≥3.90	Equaled Volume
	F90-150	≥98.50	≦0.40
	F180-220	≥98.20	≦0.40
	F230-400	≥98.00	≦0.50
	F500-1200	≥97.50	≦0.60
WA-B	F12-80	≥99.00	≦0.40	≥3.90	Equaled volume
	F90-150	≥98.50	≦0.40
	F180-220	≥98.00	≦0.40
	F230-600	≥97.50	≦0.50
WA-P1	P16-80	≥99.00	≦0.40	≥3.90	Equaled volume needle form
	P100-150	≥98.50	≦0.40
	P180-400	≥98.00	≦0.50
	P500-1200	≥97.50	≦0.60

Chart for grit size and magnetic contents of China GB/T2479-1996

Grit (FEPA F.P)	Magnetic contents ≤ %
Grit (FEPA F.P)	WA	WA-B,WA-P
12-30	0.0023	0.0040
36-60	0.0022	0.0035
70-120	0.0021	0.0030
150-220	0.0016	0.0025

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White Aluminum Oxide(WA)