Aim\ To study the properties of aluminium alloys melted in crucible with different fireproof material. Methods\ According to parallel experiment principle
the property of aluminium alloys in crucible of two different materials is measured. Results\ The measured data prove that the properties of aluminium alloys melted in two crucibles have no considerable difference. Conclusion\ The CaO radical fireproof material can satisfy the need of aluminium alloys melting. It can provide good merit in applications.