Horizontal centrifugal casting is an effective method for the production of hollow metal with good mechanical properties, low defect, cast

to size and relatively cheap. The ability of a metal to satisfy the above requirements highly depends on its microstructure. In this study, the

relationship between microstructural parameters such as grain size and the amount of phases with bulk hardness of SnCu4Pb3 is concerned

in three areas of the product. Consequently, to achieve the desired hardness of the product in a particular area, the interaction of two

factors of the microstructure including, grain size and particles amount of the hard intermetallic compositions (Cu6Sn5) should be noted.