Abstract

Years of experience in developing high performance materials resulted in the invention of Nicrofer 5923 hMo. This high-chromium, high-molybdenum nickel-base alloy aims to answer the continuous rising demand of the Chemical Process Industry to use polyvalent materials for very corrosive applications as for example batch reactors, in which the material normally is exposed to highly aggressive and changing atmospheres.

While laboratory corrosion tests are extremely useful tools in determining the types of media or conditions in which a material may be expected to give good performance, screening tests with Nicrofer 5923 hMo have been followed by innumerable plant tests under real operating conditions.

Since the invention of Nicrofer 5923hMo in 1990, the alloy performed with very satisfying results in many processes of the chemical industry, such as the synthesis of acrylic or methacrylic esters, the production of citric acid, in numerous units of the fine chemical production, especially in the presence of fluorinated and chlorinated organics, the production of herbicides and still many more.

The large number of references with Nicrofer 5923hMo mirrors the unique combination of properties of this alloy, such as