according to the casting experience of Jiashan Rongchang sliding bearing, tin bronze and lead bronze belong to a kind of copper alloy which is difficult to cast.

tin bronze: the content of tin is higher than that of lead. According to the experience of Rongchang casting, this copper is soft and has good wear resistance, such as CUSN1,CU663, CU555 and so on. More common.

generally speaking, lead-containing elements in lead bronze are relatively high, generally speaking, the lead content exceeds 1%, such as CUSN1PB1, CUSNPB15 and so on. This copper alloy has good lubricity and easy cutting, but it is difficult to cast and has serious pollution.