Brand name Item	High pure low silica corundum	Pure corundum material	Chrome corundum material	Sintered corundum brick
	XHA-1S	XHA-11S	XDCA-12S	XA-95
Al2O3 ≥%	99.5	98.5	88	95
SiO2 ≤%	0.1	0.5
Fe2O3≤%	0.1	0.1	0.3
Cr2O3 %			10-12
Bulk density≥g/cm3	3.15	3.0	3.15	3.2
Apparent porosity				16
Cold crushing strength≥MPa	100	80	80-100	90
High-temperature bending strength 1400℃*0.5 ≥MPa	9.8
Refractoriness under load 0.2Mpa（T0.6℃）≥	1750	1750	1700	1700
Refratoriness >℃	1900	1850
Themal shock resistances（1100℃-cycle）	10	10
Linear change after heating 1600℃*3h%	0.1	0.1	0-0.2

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