FCAW-G and FCAW-S welding process

The different between FCAW-S and FCAW-G.

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As per ASME Section 9

  1. For welder qualification -Shielding gas is not considered as an essential variable so the qualification of FCAW -G also qualifies for FCAW-S
    2.For Procedure qualification- Shielding gas is considered as an essential variable QW-408.2 ie., Change in shielding gas/addition or deletion requires requalification.

As per AWS D1.1
1.For welder qualification- Shielding gas is not considered as an essential variable so the same criteria as per ASME
2.For Procedure qualification - Shielding gas is considered as an essential variable Table 6.5 (10).Same criteria as per ASME

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