How Does the Flux in a FCAW Wire Compare to a SMAW

question 13

Multiple Choice

How does the flux in a FCAW wire compare to a SMAW electrode, and what does it affect?

• A) FCAW has less flux, but the wire is fed into the weld faster so there is more slag on a weld as compared to a SMA weld.
• B) Both processes' filler metals have the same amount of flux, but only the FCAW flux gets pushed deeper into the molten weld pool.
• C) FCAW wire has a lower flux-to-metal ratio so it is more efficient than SMAW.
• D) SMAW filler rods are a lot bigger than FCAW wire, but there is more flux-to-filler metal in the FCAW filler wire.

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