¡¡		¡¡
		H-1		H-2		H-3		HA
		Spec	Typical	Spec	Typical	Spec	Typical	Spec	Typical
Chemical Analysis (%)	Al2O3	70¡Ü	73	60¡Ü	63	50¡Ü	52	80¡Ü	83
	Fe2O3	2.0¡Ý	1.5	2.0¡Ý	1.5	2.0¡Ý	1.6	2.0¡Ý	1.5
Refractoriness (SK)		38¡Ü	38	37¡Ü	37	36¡Ü	36	39¡Ü	39
Bulk Density		2.30¡Ü	2.58	2.20¡Ü	2.48	2.10¡Ü	2.38	2.40¡Ü	2.42
Apparent Porosity (%)		23¡Ý	20	23¡Ý	20	23¡Ý	20	23¡Ý	20
Cold Crushing Strength		400¡Ü	550	400¡Ü	500	300¡Ü	450	400¡Ü	550
(Kg/cm2)
Thermal Expansion (%)		-	0.65	-	0.60	-	0.53	-	0.68
at 1000¡æ
Permanent Linear Change (%)		-	0.3	-	0.3	-	0.3	-	0.2
at 1500¡æ ¡Á 2Hrs
Refractoriness under Load		-	1,580	-	1,500	-	1470	-	1650
(2Kg/cm2, T2¡æ)