Welder Red Seal · Question
What is the primary function of silicon and manganese in steel weld metal?
Silicon and manganese are critical deoxidizers in steel weld metal. They combine with oxygen to form slag, removing oxygen from the weld pool and preventing por
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Question: What is the primary function of silicon and manganese in steel weld metal?
Answer options: ✅ They act as deoxidizers, improving weld metal toughness and cleanliness
- They increase the tensile strength and hardness significantly
- They improve formability and ductility
- They modify the grain size to prevent brittleness
Correct answer: They act as deoxidizers, improving weld metal toughness and cleanliness
Explanation: Silicon and manganese are critical deoxidizers in steel weld metal. They combine with oxygen to form slag, removing oxygen from the weld pool and preventing porosity, thereby improving the cleanliness and mechanical properties (like toughness) of the weld.
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