FCAW NC II Practice Questions - TESDA Flux-Cored Arc Welding (FCAW) NC II Competency Assessment Exam

What is the primary difference between self-shielded and gas-shielded flux-cored wire?

Self-shielded wire relies on flux ingredients for shielding; gas-shielded wire also uses an external shielding gas supplied at the nozzle. Self-shielded wire requires 100% argon; gas-shielded wire uses no external gas. Self-shielded wire is only for stainless steel; gas-shielded wire is only for aluminum. Self-shielded wire uses AC only; gas-shielded wire uses DC only.

Correct Answer:

Self-shielded wire relies on flux ingredients for shielding; gas-shielded wire also uses an external shielding gas supplied at the nozzle.

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