Which of the following is/are the class1 corrosion resistance materials in nitric acid?(a) High-silicon cast irons(b) Stainless steels (type 430)(c) Titanium(d) High-silicon cast iron, stainless steels, and titaniumI have been asked this question in an interview for internship.I'm obligated to ask this question of Mineral Acids topic in division Mineral Acids of Corrosion Engineering

Which of the following is/are the class1 corrosion resistance material

1.	Which of the following is/are the class1 corrosion resistance materials in nitric acid?(a) High-silicon cast irons(b) Stainless steels (type 430)(c) Titanium(d) High-silicon cast iron, stainless steels, and titaniumI have been asked this question in an interview for internship.I'm obligated to ask this question of Mineral Acids topic in division Mineral Acids of Corrosion Engineering
Answer» Right ANSWER is (d) High-silicon cast iron, stainless steels, and titanium The explanation is: Class1 materials are the materials that are USED for a particular ENVIRONMENT and it is generally recommended for a VARIETY of conditions of temperature and concentration. Class1 materials for NITRIC acid includes high-silicon cast irons, stainless steels, and titanium.

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