API 571 Certification (Corrosion & Materials) 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

Define "pitting susceptibility."

Pitting susceptibility refers to resistance against corrosion

Pitting susceptibility is the tendency to form small, localized pits

Pitting susceptibility specifically refers to the tendency of a material, often a metal, to develop small, localized pits when it undergoes corrosion. This phenomenon occurs when the protective oxide layer on the surface of a material is damaged, leading to localized corrosion that manifests as small holes or pits. These pits can significantly weaken the integrity of the material over time, making understanding and assessing pitting susceptibility crucial in fields like corrosion engineering and materials science.

Understanding pitting susceptibility is essential because it helps predict how a material will behave in corrosive environments, allowing for better material selection and protective measures in applications where corrosion is a concern. This definition underscores the importance of localized corrosion mechanisms and the factors that can lead to their initiation and propagation.

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Pitting susceptibility is the absence of corrosion

Pitting susceptibility refers to surface preparation techniques

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