What stainless steel material should be used for 300,000 mg/L saline?
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What stainless steel material should be used for 300,000 mg/L saline?
What’s the temperature? Are there specific ingredients? If the temperature is not high, it is recommended to use non-metallic materials; PVC, engineering plastics, or PP are all suitable options, as they provide good resistance to corrosion
With such a high concentration of saltwater, it is likely that no stainless steel material can handle it……
This post was last edited by qugd on 2016-9-21 at 12:00. A saltwater solution with a concentration of 300 grams per liter is almost saturated at room temperature if it consists of sodium chloride; such a solution should not be handled using ordinary stainless steel. If the temperature is not very high, PVC or PP pipes can be used for transportation, and containers can be made of materials with linings. If the temperature is high, Hastelloy or enamel can be considered. There are now super-austenitic stainless steels that can withstand seawater, and thermal power plants located by the sea also use specialized stainless steels such as 10CrMoAl. However, while these two types of stainless steel can handle seawater, it is not clear whether they are suitable for high-concentration saltwater.
If the temperature is not very high, PVC or PP pipes can be used for transportation, and containers can be made of materials with linings. If the temperature is high, Hastelloy or enamel can be considered.
The original poster didn’t clarify the questions; information such as operating temperature, device type, pressure, and so on is needed, not just corrosion resistance.
Is it a heat exchanger? If it is a heat exchange device, graphite heat exchangers are recommended. Under these conditions, graphite chemical equipment can prevent corrosion from occurring.
Consider carbon steel and other steels lined with non-metals such as PTFE – inexpensive. If you have money, go for specialty materials