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What is the maximum strength of mild steel arc welds on addition of microelements in the slag?(a) 53 kgf/mm^2(b) 49 kgf/mm^2(c) 57kgf/mm^2(d) 61 kgf/mm^2 |
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Answer» Correct option is (c) 57kgf/mm^2 For explanation I would say: When there is an addition of some microelements in the slag along with a few nonmetallic inclusions, there is an increase in the strength of the mild steel arc weld. The maximum amount of strength goes up to 57 kgf/mm^2, which is 570 N/mm^2. |
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