Tundish Stopper
	Al2O3	MgO	SiO2	C+SiC	Apparent porosity	Bulk density	C.C.S	M.O.R
	(% minm)	(% minm)	(% max)	(% minm)	(% max)	(gm./cc minm)	(MPa minm)	(MPa minm)
Head	65		5	10	16	2.75	30	7
Body	45			25	18	2.35	25	7
Head		65	8	10	16	2.6	20	6
Body	45			25	18	2.3	25	6