Thermal Decomposition Behaviour of Foundry Sand for Cast Steel in Nitrogen and Air Atmospheres

Table 1

Chemical composition of foundry sand.

Chemical composition	wt. %	Chemical composition	wt. %
SiO2	94.6021	MgO	0.0530
Fe2O3	1.9775	Na2O	0.0526
Al2O3	1.1150	ZrO2	0.0418
SO3	0.8141	CuO	0.0372
K2O	0.5864	ZnO	0.0221
Cr2O3	0.2576	P2O5	0.0190
CaO	0.2152	PbO	0.0178
MnO	0.1082	NiO	0.0136
TiO2	0.0637	Rb2O	0.0032