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2 votes
Pieces of metal are welded together in an atmosphere of argon. Explain why an atmosphere of argon is used.

asked
User JustH
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1 Answer

3 votes
Argon is used to protect the weld from possible porosit,  Porosity is small divets and holes that weeken the weld being made.  
answered
User Muuk
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7.7k points
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