What should be done in the case of intergranular corrosion in 304 steel at room temperature using 20% nitric acid? ? How should one choose the materials?
Thread Content
What should be done in the case of intergranular corrosion in 304 steel at room temperature using 20% nitric acid? ? How should one choose the materials?
Choose a tank lined with PTFE, or try using aluminum; check the corrosion curve of aluminum in nitric acid.
For you, either direct enamel coating or plastic-lined PTFE will work. . . . Metals won’t work, the concentration is a bit low
Can key Class A and B liquids be handled using lined tanks? ? ? What to do if there is a static electricity problem? ?
{:3_48:} There’s static electricity; your nitric acid should be fine then. . . . In the past, when using enamel equipment for nitration, there was no problem either. . . It’s mainly your reaction – what can you do if there’s no oxygen and static electricity is present? . .
Tangci or fluorine-lined materials should work fine. Consider the operating conditions (mainly pressure and external environment); CPVC or a steel framework would work just as well.