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Ҏ(gu��)��	��ͨ��		��X��		��X��		��X��		99��X��
Al₂O₃+SiO₂(%)	>93		>92		>93		>94		>99
Al₂O₃(%)	17-23		23-30		47-56		90-92		99
Fe₂O₃(%)	<1		<1		<1		<1		0.2
CaO (%)	<0.5		<1.5		<2		<4		0.2
MgO(%)	<0.5		<2.5		<0.5		<0.5		0.1
K₂O+Na₂O (%)	<4		<4		<3.5		<4		>0.5
TiO₂(%)	------		<0.5		<0.1		<0.1		0.5
��x�F(%)	------		<0.1		<0.001		<0.001		------
��ˮ��(%)	<0.5		<0.5		<2		<3		2.0-6.0
�w�e�ܶ�(g/cm³)	2.3-2.4		2.3-2.4		2.6		3.5		3.0-3.6
zui��ض�(��)	>1100		>1100		1480		1760		------
�ѷe�ܶ�(kg/m³)	1350		1400		1500		1900		2000
Ī��Ӳ�ȣ��	>6.5		>7		>7		>7		>7.5
��KN/�w��
1/4"(6mm)	>0.5	>0.54		>0.56		>0.44		>1
1/2" (13mm)	>1.5	>1.67		>1.56		>1.99		>3
3/4" (19mm)	>4.15	>4.21		>2.89		>3.21		>5
1" (25mm)	>6.07	>6.22		>4.89		>5.33		>8
1-1/2" (38mm)	>8.52	>8.92		>5.33		>5.28		>8
2" (50mm)	>9.7	>9.8		>6.22		>8		>15