Brand Specification		HBLT-65	HBLT-70	HBLT-85	HBLMT-40	HBLMT-45	HBL-65
Al2O3    ≥ %		65	70	85	40	8	65
C     ≥ %		5	3	3	5	5	-
MgO   ≥ %		-	-	-	5	45	-
Apparent porosity % ≤	impregnation	10	10	10	10	10	10
	No-impregnation	14	14	14	18	18	19