Welder Red Seal · Question
A welder is setting up for shielded metal arc welding (SMAW) on a mild steel beam. Which minimum shade number is generally recommended for the filter lens in their welding helmet for this process?
For SMAW (stick welding) on mild steel, a minimum shade number of 10 is typically recommended to adequately protect the eyes from the intense visible light, UV,
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Question: A welder is setting up for shielded metal arc welding (SMAW) on a mild steel beam. Which minimum shade number is generally recommended for the filter lens in their welding helmet for this process?
Answer options:
- Shade 6
- Shade 8 ✅ Shade 10
- Shade 14
Correct answer: Shade 10
Explanation: For SMAW (stick welding) on mild steel, a minimum shade number of 10 is typically recommended to adequately protect the eyes from the intense visible light, UV, and IR radiation produced by the arc. Shades 6 and 8 are too light for SMAW, and shade 14 might be unnecessarily dark for general SMAW, making it difficult to see the workpiece clearly without higher amperage.
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