My company is starting a job that uses ASTM A588 weathering steel. All of our welders are qualified for FCAW E71T-1 with co2 shielding.
For the A588 we are going to use E81T1-NiMH8 75-25 argon-co2. D1.1:2006 table 4.12 does not list shielding gas or filler metal strength
as an essential variable for FCAW. Do the welders need to requalify with the new wire per D1.1?