Is Inconel compatible with Hydrochloric Acid?

Answer 1

INCONEL® alloy 718

A precipitation-hardenable nickel-chromium alloy also containing

significant amounts of iron, niobium, and molybdenum along with lesser

amounts of aluminum and titanium. It combines corrosion resistance and

high strength with outstanding weldability including resistance to

postweld cracking. The alloy has excellent creep-rupture strength at

temperatures to 1300°F (700°C). Used in gas turbines, rocket motors,

spacecraft, nuclear reactors, pumps, and tooling. INCONEL alloy 718SPF™ is

a special version of INCONEL alloy 718, designed for superplastic forming.

UNS: N07718

W.Nr.: 2.4668

Technical Bulletin Available at American Special Metals, Corp. http://www.americanspecialmetals.com/InconelAlloy718.html

Answer 2

Yes, Inconel is highly resistant to hydrochloric acid. It has excellent corrosion resistance in a wide range of acidic environments, including hydrochloric acid. It is often used in applications where resistance to corrosive substances such as hydrochloric acid is important.