Why is Hastelloy inferior to titanium in dilute hydrochloric acid solutions
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I recently conducted a series of corrosion resistance tests on materials over a period of 10 days. During the experiments, it was found that Hastelloy C276 cannot withstand conditions in 3% dilute hydrochloric acid at a temperature of 60 degrees Celsius? And titanium can almost withstand it? Please give me some advice from the experts! Thank you!
Corrosion rate of HAS C-276 at 5% hydrochloric acid at 60 degrees: 10 MPY; corrosion rate of titanium: 42.8 MPY. The above figures were obtained through my own research and are provided for reference only
Try to minimize the use of low-concentration, high-temperature hydrochloric acid solutions; otherwise, the metal materials will not be able to provide protection. In other words, effort needs to be put into the manufacturing process
Just by looking at this interface, you can tell it’s President Qian
Neither alloy is cheap; if the equipment or pipes are not subject to high pressures, impregnated impermeable graphite can be used