____ additions are restricted to stainless steels because it is the primary cause of porosity in aluminum welds.

Name: ____ additions are restricted to stainless steels because it is the primary cause of porosity in aluminum welds.
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Question

Quizplus · Accepted Answer

Hydrogen is known to cause porosity in aluminum welds, so its use as an addition is restricted to stainless steels only. Nitrogen, helium, and argon are commonly used as shielding gases in welding, but they do not cause porosity in aluminum welds.

____ Additions Are Restricted to Stainless Steels Because It Is