Red Seal Welding Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What classification does a 7018 electrode have?

Medium Hydrogen

Low Hydrogen

A 7018 electrode is a type of welding electrode used for low hydrogen welding. This means that the electrode has a low moisture content, which prevents hydrogen cracking and produces stronger welds. Options A, C, and D are incorrect because they do not accurately describe the classification of a 7018 electrode. A medium hydrogen electrode would have a higher moisture content, while a high hydrogen electrode would have an even higher moisture content, both of which could lead to weaker welds and potential cracking. A variable hydrogen electrode would have inconsistent levels of moisture, making it unreliable for consistent, strong welding.

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High Hydrogen

Variable Hydrogen

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