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Which electrode material is used for welding of carbon steel?

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in Engineering Material & Metallurgy by (773k points)
Which electrode material is used for welding of carbon steel?

(a) Cast aluminum alloy rod

(b) Soft steel wire

(c) Copper rod

(d) Drawn brass rod

The question was posed to me in an international level competition.

I'd like to ask this question from Welding in division Metallurgy of Welding, Brazing and Soldering of Engineering Material & Metallurgy

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Best answer
The correct choice is (b) Soft steel wire

Best explanation: The metal of the electrode depends on the kind of parent metal used. For carbon steel, soft steel wires containing 0.1-0.18% carbon and 0.0025-0.04% phosphorus and sulfur are used. Cast aluminum alloy rods, copper rods, drawn brass rods containing are used for aluminum, copper casting, and brass workpieces respectively.

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