1, the corrosion resistance of the material is different: stainless steel impeller use time is longer, sanitary and clean, bronze impeller is also stronger corrosion resistance, mainly used in fire, sea water and other occasions, but no stainless steel impeller good. (Except for tin bronze, which is much better than stainless steel at a better price).

2, efficiency is different: the use efficiency of stainless steel impeller is higher,

3, the price is different: 304 stainless steel impeller compared with bronze, 316, 316L, two-way stainless steel price is much higher.

4. Different materials, different environmental protection levels:

5. Different temperature conditions: bronze has excellent low temperature resistance, and the strength of minus 100 degrees will not decrease at all. Instead of chrome-nickel stainless steel, a few tens of degrees below zero as brittle as glass. At room temperature, the mechanical strength of stainless steel is higher.