Material issues with pump mechanical seal coolers
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This post was last edited by WQC on 2015-8-8 at 13:42. Issue regarding the material of the seal cooler used in pumps: The material of the cooler tubes is 316L. Since the CL ion concentration in the circulating water is around 800, which is well above the acceptable level, the cooler often leaks. What material would be more suitable in this case? Operating conditions: Medium temperature of 300 degrees. Pressure: 15 kilograms, lubricating oil
That can’t be right; 316L does have some resistance to CI ions.
It should be fine below 1000.
CL ions in circulating water cause significant corrosion of stainless steel; however, 316L has better corrosion resistance. The concentration of CL ions in circulating water should be ≤150, with 800 being a very high value. Consider using carbon steel as the material for the cooler.
This post was last edited by zhangya*ong on 2015-8-5 20:30. It is recommended to use C15 stainless steel, TA10, or aluminum – any of these will work!