Specification:

property of white aluminum oxide for abrasive sandblasting Precision casting:

Purpose	Specification		Chemical composition(%)				Magnetic material content(%)
			Al2O3	Na2O	SiO2	CaO
For abrasive	F	12#—80#	99.2Min	0.4Max	—	0.4 Max	0.003 Max
		90#—150#	99.0Min	0.4 Max			0.003 Max
		180#—240#	99.0Min	0.4 Max	—	0.4 Max	0.002 Max

Property of White fused alumina/Aluminum oxide for refractory material:

Purpose	Specification		Chemical composition(%)				Magnetic material content(%)
			Al2O3	Na2O	SiO2	CaO
For refractory	Size sand	0-1mm 1-3mm 3-5mm 5-8mm 8-12mm	99.0Min	0.4 Max	—	0.4 Max	0.003 Max
	Fine powder	180#-0 240#-0 320#-0	99.0Min		0.2 Max	0.5 Max	0.001 Max

Mohs Hadness	≥10
Melting Temperature(°C)	2250
Refractory Temperature(°C)	1900
True Density	≥3. 50

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