When selecting materials for centrifugal pumps, the following factors should be considered:
Compatibility with the fluid being pumped: The material should be chemically and thermally compatible with the fluid, to prevent corrosion or erosion.
Temperature: The material should be able to withstand the temperature of the fluid being pumped, as well as any external temperatures that the pump may be exposed to.
Pressure: The material should be able to withstand the pressure of the fluid being pumped, as well as any external pressures that the pump may be exposed to.
Abrasion: The material should be able to resist abrasion from the fluid or any solid particles that may be present in the fluid.
Cost: The material should be cost-effective and readily available.
Common materials used in centrifugal pumps include cast iron, stainless steel, bronze, and plastic.