Difference between stainless steel and cast iron used for overcurrent component materials
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What are the specific differences between using stainless steel and cast iron for overcurrent components? ? ? I request an answer from the expert; thank you
This post was last edited by 3983596_FPPZ on 2019-3-28 07:48. The corrosion resistance varies; stainless steel has much higher corrosion resistance than cast iron, but its cost is also higher
The choice between stainless steel, cast iron, carbon steel, or chromium steel depends mainly on the requirements of the fluid to be pumped. According to API610, stainless steel for flow components should be at least grade A-7, while cast iron should be grade S-1.
Isn’t cast iron I-1? The S-1 casing is made of carbon steel
The corrosion resistance varies, and so does the cost
Corrosion resistance determined by the medium
Depending on the corrosive environment and the required corrosion resistance, cast iron also includes specialized corrosion-resistant variants such as high-silicon cast iron, high-chromium cast iron, and high-nickel cast iron. Stainless steel also requires careful selection; choosing the wrong type may result in a shorter service life compared to carbon steel.
Choose between stainless steel and cast iron based on the specific properties of the material.