The impeller material, in addition to considering the centrifugal force under the action of mechanical strength, but also consider the material resistance to wear and corrosion resistant performance.
选择叶轮材料时，除了要考虑离心力作用下的机械强度以外，还要考虑材料的耐磨和耐腐蚀性能。
Some high chromium steels can be hardened by heat treatment and are used where resistance to wear, abrasion, and corrosion are required.
一些高铬钢能通过热处理硬化，可用于抗磨坏，抗磨损，抗腐蚀需求的地方。
While its disadvantages of low hardness, low wear resistance and easy to occur inter crystal corrosion affect its application ranges and life-span.
但铝和铝合金硬度低、不耐磨、易发生晶间腐蚀，这些缺点影响了其应用范围和使用寿命。
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