Corrosion resistance of medium chromium ferritic stainless steel 00Cr18Mo2Ti and high purity Cr18Mo2Ti

Corrosion Resistance of 00Cr18Mo2Ti and High Purity Cr18Mo2Ti Ferritic Stainless Steel

Ferritic stainless steel is an important class of stainless steels often used within the petrochemical industry. One type of ferritic stainless steel is 00Cr18Mo2Ti, which is an 18% chromium, 2% molybdenum and titanium stabilized stainless steel, and is sometimes referred to as a “Super 18-2” type stainless steel. High purity Cr18Mo2Ti is also a class of ferritic stainless steel with a higher percentage of chromium and molybdenum. This type of stainless steel is known for its high strength, good oxidation resistance and excellent corrosion resistance to aqueous chloride media.

The corrosion resistance of 00Cr18Mo2Ti Ferritic stainless steel is formed by the formation of a protective film. As chromium is an important element of ferritic stainless steel, a continuous chromium oxide film forms at the surface and acts as a protectant against environmental corrosion. In addition, the molybdenum content of 00Cr18Mo2Ti stainless steel is also responsible for its corrosion resistance in environments containing aqueous acidic media and chloride ions. The titanium in the steel stabilizes the chromium and enhances corrosion resistance in chloride bearing environments.

The corrosion resistance of 00Cr18Mo2Ti ferritic stainless steel is relatively good and it is suitable for use in many industrial applications. It is often used for general-purpose applications such as tank liners and process equipment in industrial plants and in locations where the environment contains chloride ions from salt water or from fertilizers. In such cases, the chrome/molybdenum/titanium content of the steel makes it resistant to pitting and crevice corrosion in both high and low pH environments.

In comparison to 00Cr18Mo2Ti, the corrosion resistance of high purity Cr18Mo2Ti ferritic stainless steel is increased due to the higher chromium and molybdenum content. This increased content gives the steel improved strength, better oxidation resistance and excellent corrosion resistance to aqueous chloride media. High purity Cr18Mo2Ti ferritic stainless steel is especially suitable for use in applications that require a higher level of corrosion resistance than standard ferritic stainless steel. It is often used in applications such as tanks and vessels where corrosion resistance is critical.

In summary, both 00Cr18Mo2Ti and high purity Cr18Mo2Ti ferritic stainless steels offer excellent corrosion resistance in acidic and chloride environments. 00Cr18Mo2Ti is suitable for general-purpose applications in industrial plants and in locations exposed to chloride ions from salt water or from fertilizers. High purity Cr18Mo2Ti is perfect for applications where high corrosion resistance is required such as tanks and vessels.

00Cr18Mo2Ti and HCr18Mo2Ti are both chromium steels with excellent corrosion resistance.

00Cr18Mo2Ti is a stainless steel grade giving a good corrosion resistance in many types of chemical media. It is a Cr18Mo2Ti based steel grade with a low level of elements promoting corrosion, such as nickel and molybdenum. Its chemical composition has been stabilized in order to give a high resistance to intergranular corrosion.

HCr18Mo2Ti is a high-purity chromium steel grade, with a chemical composition that has less of the elements promoting corrosion, such as nickel and molybdenum. It is also a Cr18Mo2Ti based steel grade, but at a higher level than 00Cr18Mo2Ti. This results in higher resistance to intergranular corrosion and wear, making it suitable for use in harsh and aggressive environments.

In terms of corrosion resistance, both of these stainless steel grades have excellent levels. However, the high purity of the HCr18Mo2Ti gives it even higher resistance to pitting and chloride-induced corrosion. This makes the HCr18Mo2Ti suitable for use in areas with high levels of acid and further environmental influences.

In summary, it can be seen that both 00Cr18Mo2Ti and HCr18Mo2Ti are chromium steels with excellent corrosion resistance. Both grades have been designed with the purpose of providing a high level of corrosion resistance in different areas and environments. The main difference between the two is found in the purity of the chemical composition, with HCr18Mo2Ti having the higher purity and therefore higher resistance to corrosion.