Inconel Alloy 718 has excellent corrosion resistance at high and low temperatures and good resistance to stress-corrosion cracking and pitting corrosion. Alloy 718 been successful in hostile environments containing H2S, CO2, chlorides, sulfides and free sulfur at selected temperatures.

Nickel contributes to corrosion resistance in many inorganic and organic, other than strongly oxidizing, compounds throughout wide ranges of acidity and alkalinity. It also is useful in combating chloride-ion stress-corrosion cracking. Chromium imparts an ability to withstand attack by oxidizing media and sulfur compounds. Molybdenum is known to contribute to resistance to pitting in many media.

Note: This 4-level rating scale is intended for comparative purposes only. Corrosion testing is recommended; factors which affect corrosion resistance include temperature, concentration, pH, impurities, aeration, velocity, crevices, deposits, metallurgical condition, stress, surface finish and dissimilar metal contact.