Senior Corrosion Technologist
1. Which of the following material properties is most important in
determining the suitability of carbon steel for high-temperature applications?
● A) Tensile strength
● B) Ductility
● C) Thermal conductivity
● D) Oxidation resistance
Answer: D) Oxidation resistance
Explanation: Oxidation resistance is crucial for high-temperature applications because it
prevents the steel from degrading due to reactions with oxygen at elevated temperatures.
2. Stainless steel's corrosion resistance is primarily due to which element?
● A) Carbon
● B) Chromium
● C) Nickel
● D) Molybdenum
Answer: B) Chromium
Explanation: Chromium forms a passive oxide layer on the surface of stainless steel, which
protects it from corrosion.
3. Which type of stainless steel is most suitable for marine environments?
● A) Ferritic
● B) Martensitic
● C) Austenitic
● D) Duplex
Answer: C) Austenitic
Explanation: Austenitic stainless steels, such as 316L, contain higher amounts of nickel and
molybdenum, which enhance their corrosion resistance in chloride-rich environments like
seawater.
4. What is the primary advantage of using carbon steel over stainless steel in
industrial applications?
● A) Higher corrosion resistance
● B) Lower cost
● C) Greater strength
● D) Better thermal expansion
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